Replace third-party owners with administrators

Migrate business and security owners into a shared administrators list across GraphQL, MCP, CLI, n8n, and the console.

Signed-off-by: Sacha Al Himdani <sacha@probo.com>

apps/console/src/_locales/en-US.json

@@ -2462,9 +2462,9 @@
   },
   "thirdPartyOverviewPage": {
     "pageTitle": "{{name}} - Overview",
-    "sections": { "details": "Third party details", "countries": "Countries", "ownership": "Ownership details", "links": "Links", "dataAgreements": "Data agreements" },
-    "fields": { "name": "Name", "description": "Description", "category": "Category", "legalName": "Legal name", "headquarterAddress": "Headquarter address", "websiteUrl": "Website URL", "businessOwner": "Business owner", "securityOwner": "Security owner" },
-    "placeholders": { "category": "Select a category" },
+    "sections": { "details": "Third party details", "countries": "Countries", "administrators": "Administrators", "links": "Links", "dataAgreements": "Data agreements" },
+    "fields": { "name": "Name", "description": "Description", "category": "Category", "legalName": "Legal name", "headquarterAddress": "Headquarter address", "websiteUrl": "Website URL", "administrators": "Administrators" },
+    "placeholders": { "category": "Select a category", "administrators": "Add administrators..." },
     "categories": { "analytics": "Analytics", "cloudMonitoring": "Cloud Monitoring", "cloudProvider": "Cloud Provider", "collaboration": "Collaboration", "customerSupport": "Customer Support", "dataStorageAndProcessing": "Data Storage and Processing", "documentManagement": "Document Management", "employeeManagement": "Employee Management", "engineering": "Engineering", "finance": "Finance", "identityProvider": "Identity Provider", "it": "IT", "marketing": "Marketing", "officeOperations": "Office Operations", "other": "Other", "passwordManagement": "Password Management", "productAndDesign": "Product and Design", "professionalServices": "Professional Services", "recruiting": "Recruiting", "sales": "Sales", "security": "Security", "versionControl": "Version Control" },
     "urlLabels": { "statusPage": "Status page URL", "termsOfService": "Terms of service URL", "privacyPolicy": "Privacy document URL", "serviceLevelAgreement": "Service level agreement URL", "dataProcessingAgreement": "Data processing agreement URL", "securityPage": "Security page URL", "trustPage": "Trust page URL" },
     "agreements": { "businessAssociate": "Business Associate Agreement", "dataPrivacy": "Data Privacy Agreement", "noBusinessAssociate": "No business associate agreement available", "noDataPrivacy": "No data privacy agreement available", "validity": { "range": "Valid from {{from}} until {{until}}", "from": "Valid from {{date}}", "until": "Valid until {{date}}" } },

apps/console/src/_locales/fr-FR.json

@@ -5743,7 +5743,7 @@
     "sections": {
       "details": "Détails du tiers",
       "countries": "Pays",
-      "ownership": "Détails de la propriété",
+      "administrators": "Administrateurs",
       "links": "Liens",
       "dataAgreements": "Accords de données"
     },
@@ -5754,11 +5754,11 @@
       "legalName": "Nom légal",
       "headquarterAddress": "Adresse du siège",
       "websiteUrl": "URL du site web",
-      "businessOwner": "Propriétaire métier",
-      "securityOwner": "Propriétaire sécurité"
+      "administrators": "Administrateurs"
     },
     "placeholders": {
-      "category": "Sélectionner une catégorie"
+      "category": "Sélectionner une catégorie",
+      "administrators": "Ajouter des administrateurs..."
     },
     "categories": {
       "analytics": "Analytique",

apps/console/src/hooks/forms/useThirdPartyForm.tsx

@@ -45,8 +45,7 @@ const schema = z.object({
   countries: z.array(z.string()),
   securityPageUrl: z.string().optional().nullable(),
   trustPageUrl: z.string().optional().nullable(),
-  businessOwnerId: z.string().nullish(),
-  securityOwnerId: z.string().nullish(),
+  administratorIds: z.array(z.string()),
 });
 
 const thirdPartyFormFragment = graphql`
@@ -67,11 +66,10 @@ const thirdPartyFormFragment = graphql`
     countries
     securityPageUrl
     trustPageUrl
-    businessOwner {
-      id
-    }
-    securityOwner {
+    administrators {
       id
+      fullName
+      emailAddress
     }
   }
 `;
@@ -112,8 +110,7 @@ export function useThirdPartyForm(thirdPartyKey: useThirdPartyFormFragment$key)
       countries: [...(thirdParty.countries ?? [])],
       securityPageUrl: thirdParty.securityPageUrl || null,
       trustPageUrl: thirdParty.trustPageUrl || null,
-      businessOwnerId: thirdParty.businessOwner?.id,
-      securityOwnerId: thirdParty.securityOwner?.id,
+      administratorIds: thirdParty.administrators.map(a => a.id),
     }),
     [thirdParty],
   );
@@ -151,5 +148,6 @@ export function useThirdPartyForm(thirdPartyKey: useThirdPartyFormFragment$key)
   return {
     ...form,
     handleSubmit,
+    administrators: thirdParty.administrators,
   };
 }

apps/console/src/pages/organizations/third-parties/overview/ThirdPartyOverviewPage.tsx

@@ -41,7 +41,7 @@ import type { ThirdPartyOverviewPageQuery } from "#/__generated__/core/ThirdPart
 import type { ThirdPartyCategory } from "#/__generated__/core/useThirdPartyFormFragment.graphql";
 import { ControlledField } from "#/components/form/ControlledField";
 import { CountriesField } from "#/components/form/CountriesField";
-import { PeopleSelectField } from "#/components/form/PeopleSelectField";
+import { PeopleMultiSelectField } from "#/components/form/PeopleMultiSelectField";
 import { useThirdPartyForm } from "#/hooks/forms/useThirdPartyForm";
 import { useOrganizationId } from "#/hooks/useOrganizationId";
 
@@ -156,6 +156,7 @@ export default function ThirdPartyOverviewPage(props: ThirdPartyOverviewPageProp
     register,
     handleSubmit,
     formState: { errors, isSubmitting },
+    administrators,
   } = useThirdPartyForm(thirdParty);
 
   const thirdPartyWithBAA
@@ -271,25 +272,21 @@ export default function ThirdPartyOverviewPage(props: ThirdPartyOverviewPageProp
       </div>
 
       <div className="space-y-4">
-        <h2 className="text-base font-medium">{t("thirdPartyOverviewPage.sections.ownership")}</h2>
+        <h2 className="text-base font-medium">{t("thirdPartyOverviewPage.sections.administrators")}</h2>
         <Card className="space-y-4" padded>
-          <PeopleSelectField
+          <PeopleMultiSelectField
             organizationId={organizationId}
             control={control}
-            name="businessOwnerId"
-            label={t("thirdPartyOverviewPage.fields.businessOwner")}
-            error={errors.businessOwnerId?.message}
+            name="administratorIds"
+            label={t("thirdPartyOverviewPage.fields.administrators")}
+            error={errors.administratorIds?.message}
             disabled={isFormDisabled}
-            optional={true}
-          />
-          <PeopleSelectField
-            organizationId={organizationId}
-            control={control}
-            name="securityOwnerId"
-            label={t("thirdPartyOverviewPage.fields.securityOwner")}
-            error={errors.securityOwnerId?.message}
-            disabled={isFormDisabled}
-            optional={true}
+            selectedPeople={administrators.map(a => ({
+              id: a.id,
+              fullName: a.fullName,
+              emailAddress: a.emailAddress,
+            }))}
+            placeholder={t("thirdPartyOverviewPage.placeholders.administrators")}
           />
         </Card>
       </div>

contrib/claude/ownership.md

@@ -35,7 +35,6 @@ Use the same shape across DB, services, GraphQL, and console pickers.
 ### Resources that follow this pattern
 
 - Assets, data (datum), risks, obligations, findings
-- Third parties (`business_owner_profile_id`, `security_owner_profile_id`)
 - Devices (ITAM) — aligned with compliance resources as of the devices table
   introduction
 
@@ -47,7 +46,7 @@ resource for the `owner` field (parent access is already established).
 
 Default for new work is a **nullable** owner (`OwnerID *gid.GID`, GraphQL
 `owner: Profile`). Set the embedded profile only when present so the resolver
-nil guard is live (device, risk, finding, third-party owners):
+nil guard is live (device, risk, finding):
 
 ```go
 // types — set only when present

e2e/console/security_read_gap_owners_test.go

@@ -25,12 +25,11 @@
 // authorization shape (authorizing the parent obj.ID with the child's
 // ActionMembershipProfileGet, then loading the child through the scope-by-key
 // Profile dataloader) also existed on asset.owner, datum.owner, finding.owner,
-// obligation.owner, risk.owner, task.assignedTo, thirdParty.businessOwner and
-// thirdParty.securityOwner. Each of those write paths validates the owner FK
-// today, so these tests use injectCrossTenantFK to plant a foreign profile id
-// directly in the row -- proving the read resolver now authorizes the actual
-// child profile id and refuses cross-tenant PII independently of the write
-// check (a future write regression, migration bug, or direct DB access).
+// obligation.owner, risk.owner, task.assignedTo, and
+// thirdParty.administrators. Each of those write paths validates the owner FK
+// today, so these tests plant a foreign profile id directly -- proving the
+// read resolver refuses cross-tenant PII independently of the write check
+// (a future write regression, migration bug, or direct DB access).
 package console_test
 
 import (
@@ -333,24 +332,24 @@ func TestSecurity_ReadGap_TaskAssignedTo(t *testing.T) {
 	testutil.AssertNodeNotAccessible(t, err, readResult.Node.AssignedTo == nil, "cross-tenant profile PII via task.assignedTo")
 }
 
-func TestSecurity_ReadGap_ThirdPartyBusinessOwner(t *testing.T) {
+func TestSecurity_ReadGap_ThirdPartyAdministrators(t *testing.T) {
 	t.Parallel()
 
 	org1Owner := testutil.NewClient(t, testutil.RoleOwner)
 	org2Owner := testutil.NewClient(t, testutil.RoleOwner)
 
-	org2ProfileID := factory.CreateUser(org2Owner, factory.Attrs{"fullName": "Org2 Secret Business Owner (read-gap probe)"})
+	org2ProfileID := factory.CreateUser(org2Owner, factory.Attrs{"fullName": "Org2 Secret Administrator (read-gap probe)"})
 
 	thirdPartyID := factory.CreateThirdParty(org1Owner, factory.Attrs{"name": "Org1 ThirdParty for read-gap probe"})
 
-	injectCrossTenantFK(t, "third_parties", "business_owner_profile_id", thirdPartyID, org2ProfileID)
+	factory.InjectCrossTenantThirdPartyAdministrator(t, thirdPartyID, org2ProfileID)
 
 	var readResult struct {
 		Node struct {
-			BusinessOwner *struct {
+			Administrators []struct {
 				ID       string `json:"id"`
 				FullName string `json:"fullName"`
-			} `json:"businessOwner"`
+			} `json:"administrators"`
 		} `json:"node"`
 	}
 
@@ -358,45 +357,20 @@ func TestSecurity_ReadGap_ThirdPartyBusinessOwner(t *testing.T) {
 		query($id: ID!) {
 			node(id: $id) {
 				... on ThirdParty {
-					businessOwner { id fullName }
+					administrators { id fullName }
 				}
 			}
 		}
 	`, map[string]any{"id": thirdPartyID}, &readResult)
 
-	testutil.AssertNodeNotAccessible(t, err, readResult.Node.BusinessOwner == nil, "cross-tenant profile PII via thirdParty.businessOwner")
-}
+	leaked := false
 
-func TestSecurity_ReadGap_ThirdPartySecurityOwner(t *testing.T) {
-	t.Parallel()
-
-	org1Owner := testutil.NewClient(t, testutil.RoleOwner)
-	org2Owner := testutil.NewClient(t, testutil.RoleOwner)
-
-	org2ProfileID := factory.CreateUser(org2Owner, factory.Attrs{"fullName": "Org2 Secret Security Owner (read-gap probe)"})
-
-	thirdPartyID := factory.CreateThirdParty(org1Owner, factory.Attrs{"name": "Org1 ThirdParty for read-gap probe"})
-
-	injectCrossTenantFK(t, "third_parties", "security_owner_profile_id", thirdPartyID, org2ProfileID)
-
-	var readResult struct {
-		Node struct {
-			SecurityOwner *struct {
-				ID       string `json:"id"`
-				FullName string `json:"fullName"`
-			} `json:"securityOwner"`
-		} `json:"node"`
+	for _, a := range readResult.Node.Administrators {
+		if a.ID == org2ProfileID || a.FullName != "" && a.ID == org2ProfileID {
+			leaked = true
+			break
+		}
 	}
 
-	err := org1Owner.Execute(`
-		query($id: ID!) {
-			node(id: $id) {
-				... on ThirdParty {
-					securityOwner { id fullName }
-				}
-			}
-		}
-	`, map[string]any{"id": thirdPartyID}, &readResult)
-
-	testutil.AssertNodeNotAccessible(t, err, readResult.Node.SecurityOwner == nil, "cross-tenant profile PII via thirdParty.securityOwner")
+	testutil.AssertNodeNotAccessible(t, err, !leaked && len(readResult.Node.Administrators) == 0, "cross-tenant profile PII via thirdParty.administrators")
 }

e2e/console/third_party_test.go

@@ -506,13 +506,13 @@ func TestThirdParty_SubResolvers(t *testing.T) {
 		assert.NotNil(t, result.Node.Services.Edges)
 	})
 
-	t.Run("businessOwner sub-resolver (null)", func(t *testing.T) {
+	t.Run("administrators sub-resolver (empty)", func(t *testing.T) {
 		query := `
 			query($id: ID!) {
 				node(id: $id) {
 					... on ThirdParty {
 						id
-						businessOwner {
+						administrators {
 							id
 							fullName
 						}
@@ -523,47 +523,17 @@ func TestThirdParty_SubResolvers(t *testing.T) {
 
 		var result struct {
 			Node struct {
-				ID            string `json:"id"`
-				BusinessOwner *struct {
+				ID             string `json:"id"`
+				Administrators []struct {
 					ID       string `json:"id"`
 					FullName string `json:"fullName"`
-				} `json:"businessOwner"`
+				} `json:"administrators"`
 			} `json:"node"`
 		}
 
 		err := owner.Execute(query, map[string]any{"id": thirdPartyID}, &result)
 		require.NoError(t, err)
-		assert.Nil(t, result.Node.BusinessOwner)
-	})
-
-	t.Run("securityOwner sub-resolver (null)", func(t *testing.T) {
-		query := `
-			query($id: ID!) {
-				node(id: $id) {
-					... on ThirdParty {
-						id
-						securityOwner {
-							id
-							fullName
-						}
-					}
-				}
-			}
-		`
-
-		var result struct {
-			Node struct {
-				ID            string `json:"id"`
-				SecurityOwner *struct {
-					ID       string `json:"id"`
-					FullName string `json:"fullName"`
-				} `json:"securityOwner"`
-			} `json:"node"`
-		}
-
-		err := owner.Execute(query, map[string]any{"id": thirdPartyID}, &result)
-		require.NoError(t, err)
-		assert.Nil(t, result.Node.SecurityOwner)
+		assert.Empty(t, result.Node.Administrators)
 	})
 }
 
@@ -756,23 +726,22 @@ func TestThirdParty_OmittableDescription(t *testing.T) {
 	})
 }
 
-func TestThirdParty_OmittableBusinessOwner(t *testing.T) {
+func TestThirdParty_Administrators(t *testing.T) {
 	t.Parallel()
 	owner := testutil.NewClient(t, testutil.RoleOwner)
 
-	// Create a profile for owner assignment
 	profileID := factory.CreateUser(owner)
 	thirdPartyID := factory.NewThirdParty(owner).
-		WithName("BusinessOwner Test ThirdParty").
+		WithName("Administrators Test ThirdParty").
 		Create()
 
-	t.Run("set business owner", func(t *testing.T) {
+	t.Run("set administrators", func(t *testing.T) {
 		query := `
 			mutation UpdateThirdParty($input: UpdateThirdPartyInput!) {
 				updateThirdParty(input: $input) {
 					thirdParty {
 						id
-						businessOwner {
+						administrators {
 							id
 							fullName
 						}
@@ -784,32 +753,33 @@ func TestThirdParty_OmittableBusinessOwner(t *testing.T) {
 		var result struct {
 			UpdateThirdParty struct {
 				ThirdParty struct {
-					ID            string `json:"id"`
-					BusinessOwner struct {
+					ID             string `json:"id"`
+					Administrators []struct {
 						ID       string `json:"id"`
 						FullName string `json:"fullName"`
-					} `json:"businessOwner"`
+					} `json:"administrators"`
 				} `json:"thirdParty"`
 			} `json:"updateThirdParty"`
 		}
 
 		err := owner.Execute(query, map[string]any{
 			"input": map[string]any{
-				"id":              thirdPartyID,
-				"businessOwnerId": profileID,
+				"id":               thirdPartyID,
+				"administratorIds": []string{profileID},
 			},
 		}, &result)
 		require.NoError(t, err)
-		assert.Equal(t, profileID, result.UpdateThirdParty.ThirdParty.BusinessOwner.ID)
+		require.Len(t, result.UpdateThirdParty.ThirdParty.Administrators, 1)
+		assert.Equal(t, profileID, result.UpdateThirdParty.ThirdParty.Administrators[0].ID)
 	})
 
-	t.Run("clear business owner with null", func(t *testing.T) {
+	t.Run("clear administrators with empty list", func(t *testing.T) {
 		query := `
 			mutation UpdateThirdParty($input: UpdateThirdPartyInput!) {
 				updateThirdParty(input: $input) {
 					thirdParty {
 						id
-						businessOwner {
+						administrators {
 							id
 						}
 					}
@@ -820,103 +790,22 @@ func TestThirdParty_OmittableBusinessOwner(t *testing.T) {
 		var result struct {
 			UpdateThirdParty struct {
 				ThirdParty struct {
-					ID            string `json:"id"`
-					BusinessOwner *struct {
+					ID             string `json:"id"`
+					Administrators []struct {
 						ID string `json:"id"`
-					} `json:"businessOwner"`
+					} `json:"administrators"`
 				} `json:"thirdParty"`
 			} `json:"updateThirdParty"`
 		}
 
 		err := owner.Execute(query, map[string]any{
 			"input": map[string]any{
-				"id":              thirdPartyID,
-				"businessOwnerId": nil,
+				"id":               thirdPartyID,
+				"administratorIds": []string{},
 			},
 		}, &result)
 		require.NoError(t, err)
-		assert.Nil(t, result.UpdateThirdParty.ThirdParty.BusinessOwner)
-	})
-}
-
-func TestThirdParty_OmittableSecurityOwner(t *testing.T) {
-	t.Parallel()
-	owner := testutil.NewClient(t, testutil.RoleOwner)
-
-	// Create a profile for owner assignment
-	profileID := factory.CreateUser(owner)
-	thirdPartyID := factory.NewThirdParty(owner).WithName("SecurityOwner Test ThirdParty").Create()
-
-	t.Run("set security owner", func(t *testing.T) {
-		query := `
-			mutation UpdateThirdParty($input: UpdateThirdPartyInput!) {
-				updateThirdParty(input: $input) {
-					thirdParty {
-						id
-						securityOwner {
-							id
-							fullName
-						}
-					}
-				}
-			}
-		`
-
-		var result struct {
-			UpdateThirdParty struct {
-				ThirdParty struct {
-					ID            string `json:"id"`
-					SecurityOwner struct {
-						ID       string `json:"id"`
-						FullName string `json:"fullName"`
-					} `json:"securityOwner"`
-				} `json:"thirdParty"`
-			} `json:"updateThirdParty"`
-		}
-
-		err := owner.Execute(query, map[string]any{
-			"input": map[string]any{
-				"id":              thirdPartyID,
-				"securityOwnerId": profileID,
-			},
-		}, &result)
-		require.NoError(t, err)
-		assert.Equal(t, profileID, result.UpdateThirdParty.ThirdParty.SecurityOwner.ID)
-	})
-
-	t.Run("clear security owner with null", func(t *testing.T) {
-		query := `
-			mutation UpdateThirdParty($input: UpdateThirdPartyInput!) {
-				updateThirdParty(input: $input) {
-					thirdParty {
-						id
-						securityOwner {
-							id
-						}
-					}
-				}
-			}
-		`
-
-		var result struct {
-			UpdateThirdParty struct {
-				ThirdParty struct {
-					ID            string `json:"id"`
-					SecurityOwner *struct {
-						ID string `json:"id"`
-					} `json:"securityOwner"`
-				} `json:"thirdParty"`
-			} `json:"updateThirdParty"`
-		}
-
-		err := owner.Execute(query, map[string]any{
-			"input": map[string]any{
-				"id":              thirdPartyID,
-				"securityOwnerId": nil,
-			},
-		}, &result)
-		require.NoError(t, err)
-		assert.Nil(t, result.UpdateThirdParty.ThirdParty.SecurityOwner)
+		assert.Empty(t, result.UpdateThirdParty.ThirdParty.Administrators)
 	})
 }
 
@@ -1178,7 +1067,7 @@ func TestThirdParty_TenantIsolation(t *testing.T) {
 		require.Error(t, err, "Should not be able to delete thirdParty from another org")
 	})
 
-	t.Run("cannot create thirdParty referencing a business owner from another organization", func(t *testing.T) {
+	t.Run("cannot create thirdParty referencing an administrator from another organization", func(t *testing.T) {
 		org2ProfileID := factory.CreateUser(org2Owner)
 
 		_, err := org1Owner.Do(`
@@ -1189,17 +1078,17 @@ func TestThirdParty_TenantIsolation(t *testing.T) {
 			}
 		`, map[string]any{
 			"input": map[string]any{
-				"organizationId":  org1Owner.GetOrganizationID().String(),
-				"name":            factory.SafeName("ThirdParty"),
-				"businessOwnerId": org2ProfileID,
+				"organizationId":   org1Owner.GetOrganizationID().String(),
+				"name":             factory.SafeName("ThirdParty"),
+				"administratorIds": []string{org2ProfileID},
 			},
 		})
-		require.Error(t, err, "must not accept a businessOwnerId belonging to another organization")
+		require.Error(t, err, "must not accept an administratorId belonging to another organization")
 	})
 
-	t.Run("cannot update thirdParty to reference a security owner from another organization", func(t *testing.T) {
+	t.Run("cannot update thirdParty to reference an administrator from another organization", func(t *testing.T) {
 		org2ProfileID := factory.CreateUser(org2Owner)
-		otherThirdPartyID := factory.NewThirdParty(org1Owner).WithName("Org1 ThirdParty for SecurityOwner").Create()
+		otherThirdPartyID := factory.NewThirdParty(org1Owner).WithName("Org1 ThirdParty for Administrators").Create()
 
 		_, err := org1Owner.Do(`
 			mutation($input: UpdateThirdPartyInput!) {
@@ -1209,11 +1098,11 @@ func TestThirdParty_TenantIsolation(t *testing.T) {
 			}
 		`, map[string]any{
 			"input": map[string]any{
-				"id":              otherThirdPartyID,
-				"securityOwnerId": org2ProfileID,
+				"id":               otherThirdPartyID,
+				"administratorIds": []string{org2ProfileID},
 			},
 		})
-		require.Error(t, err, "must not accept a securityOwnerId belonging to another organization")
+		require.Error(t, err, "must not accept an administratorId belonging to another organization")
 	})
 
 	t.Run("cannot create thirdParty referencing a parent thirdParty from another organization", func(t *testing.T) {

e2e/internal/factory/factory.go

@@ -23,15 +23,19 @@ package factory
 
 import (
 	"bytes"
+	"context"
 	"encoding/json"
 	"fmt"
 	"maps"
 	"net/http"
 	"strings"
+	"testing"
 
 	"github.com/brianvoe/gofakeit/v7"
 	"github.com/stretchr/testify/require"
+	"go.gearno.de/kit/pg"
 	"go.probo.inc/probo/e2e/internal/testutil"
+	"go.probo.inc/probo/internal/test"
 )
 
 func SafeName(prefix string) string {
@@ -225,6 +229,10 @@ func CreateThirdParty(c *testutil.Client, attrs ...Attrs) string {
 		input["category"] = *cat
 	}
 
+	if v, ok := a["administratorIds"]; ok {
+		input["administratorIds"] = v
+	}
+
 	var result struct {
 		CreateThirdParty struct {
 			ThirdPartyEdge struct {
@@ -241,6 +249,41 @@ func CreateThirdParty(c *testutil.Client, attrs ...Attrs) string {
 	return result.CreateThirdParty.ThirdPartyEdge.Node.ID
 }
 
+// InjectCrossTenantThirdPartyAdministrator bypasses the application and writes a
+// third_party_administrators row for a foreign profile, for read-gap security tests.
+func InjectCrossTenantThirdPartyAdministrator(t *testing.T, thirdPartyID, foreignProfileID string) {
+	t.Helper()
+
+	client := test.PGClient(t)
+	ctx := context.Background()
+
+	err := client.WithConn(ctx, func(ctx context.Context, conn pg.Querier) error {
+		_, err := conn.Exec(ctx, `
+INSERT INTO third_party_administrators (
+	third_party_id,
+	administrator_profile_id,
+	tenant_id,
+	organization_id,
+	created_at,
+	updated_at
+)
+SELECT
+	id,
+	$1,
+	tenant_id,
+	organization_id,
+	NOW(),
+	NOW()
+FROM third_parties
+WHERE id = $2
+ON CONFLICT DO NOTHING
+`, foreignProfileID, thirdPartyID)
+
+		return err
+	})
+	require.NoError(t, err, "test setup: cannot inject cross-tenant third party administrator")
+}
+
 func CreateFramework(c *testutil.Client, attrs ...Attrs) string {
 	c.T.Helper()
 

packages/n8n-node/nodes/Probo/actions/thirdParty/create.operation.ts

@@ -119,8 +119,8 @@ export const description: INodeProperties[] = [
 		description: 'The headquarter address of the thirdParty',
 	},
 	{
-		displayName: 'Business Owner ID',
-		name: 'businessOwnerId',
+		displayName: 'Administrator IDs',
+		name: 'administratorIds',
 		type: 'string',
 		displayOptions: {
 			show: {
@@ -129,20 +129,7 @@ export const description: INodeProperties[] = [
 			},
 		},
 		default: '',
-		description: 'The ID of the business owner (People ID)',
-	},
-	{
-		displayName: 'Security Owner ID',
-		name: 'securityOwnerId',
-		type: 'string',
-		displayOptions: {
-			show: {
-				resource: ['thirdParty'],
-				operation: ['create'],
-			},
-		},
-		default: '',
-		description: 'The ID of the security owner (People ID)',
+		description: 'Comma-separated administrator profile IDs',
 	},
 	{
 		displayName: 'Additional Fields',
@@ -248,8 +235,7 @@ export async function execute(
 	const websiteUrl = this.getNodeParameter('websiteUrl', itemIndex, '') as string;
 	const legalName = this.getNodeParameter('legalName', itemIndex, '') as string;
 	const headquarterAddress = this.getNodeParameter('headquarterAddress', itemIndex, '') as string;
-	const businessOwnerId = this.getNodeParameter('businessOwnerId', itemIndex, '') as string;
-	const securityOwnerId = this.getNodeParameter('securityOwnerId', itemIndex, '') as string;
+	const administratorIds = this.getNodeParameter('administratorIds', itemIndex, '') as string;
 	const additionalFields = this.getNodeParameter('additionalFields', itemIndex, {}) as {
 		statusPageUrl?: string;
 		termsOfServiceUrl?: string;
@@ -307,8 +293,7 @@ export async function execute(
 	if (websiteUrl) input.websiteUrl = websiteUrl;
 	if (legalName) input.legalName = legalName;
 	if (headquarterAddress) input.headquarterAddress = headquarterAddress;
-	if (businessOwnerId) input.businessOwnerId = businessOwnerId;
-	if (securityOwnerId) input.securityOwnerId = securityOwnerId;
+	if (administratorIds) input.administratorIds = administratorIds.split(',').map(id => id.trim()).filter(Boolean);
 	if (additionalFields.statusPageUrl) input.statusPageUrl = additionalFields.statusPageUrl;
 	if (additionalFields.termsOfServiceUrl) input.termsOfServiceUrl = additionalFields.termsOfServiceUrl;
 	if (additionalFields.privacyPolicyUrl) input.privacyPolicyUrl = additionalFields.privacyPolicyUrl;

packages/n8n-node/nodes/Probo/actions/thirdParty/get.operation.ts

@@ -57,18 +57,11 @@ export const description: INodeProperties[] = [
 				description: 'Whether to include organization in the response',
 			},
 			{
-				displayName: 'Include Business Owner',
-				name: 'includeBusinessOwner',
+				displayName: 'Include Administrators',
+				name: 'includeAdministrators',
 				type: 'boolean',
 				default: false,
-				description: 'Whether to include business owner in the response',
-			},
-			{
-				displayName: 'Include Security Owner',
-				name: 'includeSecurityOwner',
-				type: 'boolean',
-				default: false,
-				description: 'Whether to include security owner in the response',
+				description: 'Whether to include administrators details',
 			},
 		],
 	},
@@ -81,8 +74,7 @@ export async function execute(
 	const thirdPartyId = this.getNodeParameter('thirdPartyId', itemIndex) as string;
 	const options = this.getNodeParameter('options', itemIndex, {}) as {
 		includeOrganization?: boolean;
-		includeBusinessOwner?: boolean;
-		includeSecurityOwner?: boolean;
+		includeAdministrators?: boolean;
 	};
 
 	const organizationFragment = options.includeOrganization
@@ -92,16 +84,8 @@ export async function execute(
 		}`
 		: '';
 
-	const businessOwnerFragment = options.includeBusinessOwner
-		? `businessOwner {
-			id
-			fullName
-			emailAddress
-		}`
-		: '';
-
-	const securityOwnerFragment = options.includeSecurityOwner
-		? `securityOwner {
+	const administratorsFragment = options.includeAdministrators
+		? `administrators {
 			id
 			fullName
 			emailAddress
@@ -132,8 +116,7 @@ export async function execute(
 					countries
 					showOnCompliancePortal
 					${organizationFragment}
-					${businessOwnerFragment}
-					${securityOwnerFragment}
+					${administratorsFragment}
 					createdAt
 					updatedAt
 				}

packages/n8n-node/nodes/Probo/actions/thirdParty/getAll.operation.ts

@@ -94,18 +94,11 @@ export const description: INodeProperties[] = [
 				description: 'Whether to include organization in the response',
 			},
 			{
-				displayName: 'Include Business Owner',
-				name: 'includeBusinessOwner',
+				displayName: 'Include Administrators',
+				name: 'includeAdministrators',
 				type: 'boolean',
 				default: false,
-				description: 'Whether to include business owner in the response',
-			},
-			{
-				displayName: 'Include Security Owner',
-				name: 'includeSecurityOwner',
-				type: 'boolean',
-				default: false,
-				description: 'Whether to include security owner in the response',
+				description: 'Whether to include administrators details',
 			},
 		],
 	},
@@ -121,8 +114,7 @@ export async function execute(
 	const options = this.getNodeParameter('options', itemIndex, {}) as {
 		filterLevel?: number;
 		includeOrganization?: boolean;
-		includeBusinessOwner?: boolean;
-		includeSecurityOwner?: boolean;
+		includeAdministrators?: boolean;
 	};
 
 	const organizationFragment = options.includeOrganization
@@ -132,16 +124,8 @@ export async function execute(
 		}`
 		: '';
 
-	const businessOwnerFragment = options.includeBusinessOwner
-		? `businessOwner {
-			id
-			fullName
-			emailAddress
-		}`
-		: '';
-
-	const securityOwnerFragment = options.includeSecurityOwner
-		? `securityOwner {
+	const administratorsFragment = options.includeAdministrators
+		? `administrators {
 			id
 			fullName
 			emailAddress
@@ -183,8 +167,7 @@ export async function execute(
 									name
 								}
 								${organizationFragment}
-								${businessOwnerFragment}
-								${securityOwnerFragment}
+								${administratorsFragment}
 								createdAt
 								updatedAt
 							}

packages/n8n-node/nodes/Probo/actions/thirdParty/update.operation.ts

@@ -118,8 +118,8 @@ export const description: INodeProperties[] = [
 		description: 'The headquarter address of the thirdParty',
 	},
 	{
-		displayName: 'Business Owner ID',
-		name: 'businessOwnerId',
+		displayName: 'Administrator IDs',
+		name: 'administratorIds',
 		type: 'string',
 		displayOptions: {
 			show: {
@@ -128,20 +128,7 @@ export const description: INodeProperties[] = [
 			},
 		},
 		default: '',
-		description: 'The ID of the business owner (People ID)',
-	},
-	{
-		displayName: 'Security Owner ID',
-		name: 'securityOwnerId',
-		type: 'string',
-		displayOptions: {
-			show: {
-				resource: ['thirdParty'],
-				operation: ['update'],
-			},
-		},
-		default: '',
-		description: 'The ID of the security owner (People ID)',
+		description: 'Comma-separated administrator profile IDs (omit to leave unchanged)',
 	},
 	{
 		displayName: 'Show on Compliance Portal',
@@ -253,8 +240,7 @@ export async function execute(
 	const websiteUrl = this.getNodeParameter('websiteUrl', itemIndex, '') as string;
 	const legalName = this.getNodeParameter('legalName', itemIndex, '') as string;
 	const headquarterAddress = this.getNodeParameter('headquarterAddress', itemIndex, '') as string;
-	const businessOwnerId = this.getNodeParameter('businessOwnerId', itemIndex, '') as string;
-	const securityOwnerId = this.getNodeParameter('securityOwnerId', itemIndex, '') as string;
+	const administratorIds = this.getNodeParameter('administratorIds', itemIndex, '') as string;
 	const showOnCompliancePortal = this.getNodeParameter('showOnCompliancePortal', itemIndex) as boolean | undefined;
 	const additionalFields = this.getNodeParameter('additionalFields', itemIndex, {}) as {
 		statusPageUrl?: string;
@@ -307,8 +293,9 @@ export async function execute(
 	if (websiteUrl !== undefined) input.websiteUrl = websiteUrl === '' ? null : websiteUrl;
 	if (legalName !== undefined) input.legalName = legalName === '' ? null : legalName;
 	if (headquarterAddress !== undefined) input.headquarterAddress = headquarterAddress === '' ? null : headquarterAddress;
-	if (businessOwnerId !== undefined) input.businessOwnerId = businessOwnerId === '' ? null : businessOwnerId;
-	if (securityOwnerId !== undefined) input.securityOwnerId = securityOwnerId === '' ? null : securityOwnerId;
+	if (administratorIds) {
+		input.administratorIds = administratorIds.split(',').map(id => id.trim()).filter(Boolean);
+	}
 	if (showOnCompliancePortal !== undefined) input.showOnCompliancePortal = showOnCompliancePortal;
 	if (additionalFields.statusPageUrl !== undefined) input.statusPageUrl = additionalFields.statusPageUrl === '' ? null : additionalFields.statusPageUrl;
 	if (additionalFields.termsOfServiceUrl !== undefined) input.termsOfServiceUrl = additionalFields.termsOfServiceUrl === '' ? null : additionalFields.termsOfServiceUrl;

pkg/cmd/thirdpartymgmt/create/create.go

@@ -58,13 +58,14 @@ type createResponse struct {
 
 func NewCmdCreate(f *cmdutil.Factory) *cobra.Command {
 	var (
-		flagOrg         string
-		flagName        string
-		flagCategory    string
-		flagDescription string
-		flagLegalName   string
-		flagAddress     string
-		flagWebsite     string
+		flagOrg             string
+		flagName            string
+		flagCategory        string
+		flagDescription     string
+		flagLegalName       string
+		flagAddress         string
+		flagWebsite         string
+		flagAdministratorID []string
 	)
 
 	cmd := &cobra.Command{
@@ -178,6 +179,10 @@ func NewCmdCreate(f *cmdutil.Factory) *cobra.Command {
 				input["websiteUrl"] = flagWebsite
 			}
 
+			if len(flagAdministratorID) > 0 {
+				input["administratorIds"] = flagAdministratorID
+			}
+
 			data, err := client.Do(
 				createMutation,
 				map[string]any{"input": input},
@@ -210,6 +215,7 @@ func NewCmdCreate(f *cmdutil.Factory) *cobra.Command {
 	cmd.Flags().StringVar(&flagLegalName, "legal-name", "", "Legal name")
 	cmd.Flags().StringVar(&flagAddress, "address", "", "Headquarter address")
 	cmd.Flags().StringVar(&flagWebsite, "website", "", "Website URL")
+	cmd.Flags().StringArrayVar(&flagAdministratorID, "administrator-id", nil, "Administrator profile ID (can be repeated)")
 
 	return cmd
 }

pkg/cmd/thirdpartymgmt/update/update.go

@@ -32,7 +32,7 @@ import (
 const updateMutation = `
 mutation($input: UpdateThirdPartyInput!) {
   updateThirdParty(input: $input) {
-    third_party {
+    thirdParty {
       id
       name
       category
@@ -47,18 +47,19 @@ type updateResponse struct {
 			ID       string `json:"id"`
 			Name     string `json:"name"`
 			Category string `json:"category"`
-		} `json:"third_party"`
+		} `json:"thirdParty"`
 	} `json:"updateThirdParty"`
 }
 
 func NewCmdUpdate(f *cmdutil.Factory) *cobra.Command {
 	var (
-		flagName        string
-		flagDescription string
-		flagCategory    string
-		flagLegalName   string
-		flagAddress     string
-		flagWebsite     string
+		flagName            string
+		flagDescription     string
+		flagCategory        string
+		flagLegalName       string
+		flagAddress         string
+		flagWebsite         string
+		flagAdministratorID []string
 	)
 
 	cmd := &cobra.Command{
@@ -112,6 +113,17 @@ func NewCmdUpdate(f *cmdutil.Factory) *cobra.Command {
 				input["websiteUrl"] = flagWebsite
 			}
 
+			if cmd.Flags().Changed("administrator-id") {
+				administratorIDs := make([]string, 0, len(flagAdministratorID))
+				for _, id := range flagAdministratorID {
+					if id != "" {
+						administratorIDs = append(administratorIDs, id)
+					}
+				}
+
+				input["administratorIds"] = administratorIDs
+			}
+
 			if len(input) == 1 {
 				return fmt.Errorf("at least one field must be specified for update")
 			}
@@ -147,6 +159,7 @@ func NewCmdUpdate(f *cmdutil.Factory) *cobra.Command {
 	cmd.Flags().StringVar(&flagLegalName, "legal-name", "", "Legal name")
 	cmd.Flags().StringVar(&flagAddress, "address", "", "Headquarter address")
 	cmd.Flags().StringVar(&flagWebsite, "website", "", "Website URL")
+	cmd.Flags().StringArrayVar(&flagAdministratorID, "administrator-id", nil, "Administrator profile ID (can be repeated; empty clears)")
 
 	return cmd
 }

pkg/cmd/thirdpartymgmt/view/view.go

@@ -42,6 +42,10 @@ query($id: ID!) {
       legalName
       headquarterAddress
       websiteUrl
+      administrators {
+        id
+        fullName
+      }
       createdAt
       updatedAt
     }
@@ -59,8 +63,12 @@ type viewResponse struct {
 		LegalName          *string `json:"legalName"`
 		HeadquarterAddress *string `json:"headquarterAddress"`
 		WebsiteUrl         *string `json:"websiteUrl"`
-		CreatedAt          string  `json:"createdAt"`
-		UpdatedAt          string  `json:"updatedAt"`
+		Administrators     []struct {
+			ID       string `json:"id"`
+			FullName string `json:"fullName"`
+		} `json:"administrators"`
+		CreatedAt string `json:"createdAt"`
+		UpdatedAt string `json:"updatedAt"`
 	} `json:"node"`
 }
 
@@ -146,6 +154,24 @@ func NewCmdView(f *cmdutil.Factory) *cobra.Command {
 				_, _ = fmt.Fprintf(out, "%s%s\n", label.Render("Website:"), *v.WebsiteUrl)
 			}
 
+			if len(v.Administrators) > 0 {
+				_, _ = fmt.Fprintf(out, "%s", label.Render("Administrators:"))
+
+				for i, a := range v.Administrators {
+					if i > 0 {
+						_, _ = fmt.Fprint(out, ", ")
+					}
+
+					if a.FullName != "" {
+						_, _ = fmt.Fprintf(out, "%s (%s)", a.FullName, a.ID)
+					} else {
+						_, _ = fmt.Fprint(out, a.ID)
+					}
+				}
+
+				_, _ = fmt.Fprintln(out)
+			}
+
 			_, _ = fmt.Fprintln(out)
 			_, _ = fmt.Fprintf(out, "%s%s\n", label.Render("Created:"), cmdutil.FormatTime(v.CreatedAt))
 			_, _ = fmt.Fprintf(out, "%s%s\n", label.Render("Updated:"), cmdutil.FormatTime(v.UpdatedAt))

pkg/coredata/migrations/20260727T100635Z.sql

@@ -0,0 +1,70 @@
+-- Copyright (c) 2025-2026 Probo Inc <hello@probo.com>.
+--
+-- Permission is hereby granted, free of charge, to any person obtaining a copy
+-- of this software and associated documentation files (the "Software"), to deal
+-- in the Software without restriction, including without limitation the rights
+-- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+-- copies of the Software, and to permit persons to whom the Software is
+-- furnished to do so, subject to the following conditions:
+--
+-- The above copyright notice and this permission notice shall be included in
+-- all copies or substantial portions of the Software.
+--
+-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+-- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+-- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+-- SOFTWARE.
+
+CREATE TABLE third_party_administrators (
+    third_party_id            text                     NOT NULL,
+    administrator_profile_id  text                     NOT NULL,
+    tenant_id                 text                     NOT NULL,
+    organization_id           text                     NOT NULL,
+    created_at                timestamp with time zone NOT NULL,
+    updated_at                timestamp with time zone NOT NULL,
+    PRIMARY KEY (third_party_id, administrator_profile_id),
+    FOREIGN KEY (third_party_id) REFERENCES third_parties(id) ON UPDATE CASCADE ON DELETE CASCADE,
+    FOREIGN KEY (administrator_profile_id) REFERENCES iam_membership_profiles(id) ON UPDATE CASCADE ON DELETE RESTRICT
+);
+
+-- Migrate existing business and security owners into administrators (dedupe).
+INSERT INTO third_party_administrators (
+    third_party_id,
+    administrator_profile_id,
+    tenant_id,
+    organization_id,
+    created_at,
+    updated_at
+)
+SELECT
+    id,
+    business_owner_profile_id,
+    tenant_id,
+    organization_id,
+    created_at,
+    updated_at
+FROM third_parties
+WHERE business_owner_profile_id IS NOT NULL
+ON CONFLICT (third_party_id, administrator_profile_id) DO NOTHING;
+
+INSERT INTO third_party_administrators (
+    third_party_id,
+    administrator_profile_id,
+    tenant_id,
+    organization_id,
+    created_at,
+    updated_at
+)
+SELECT
+    id,
+    security_owner_profile_id,
+    tenant_id,
+    organization_id,
+    created_at,
+    updated_at
+FROM third_parties
+WHERE security_owner_profile_id IS NOT NULL
+ON CONFLICT (third_party_id, administrator_profile_id) DO NOTHING;

pkg/coredata/third_party.go

@@ -166,8 +166,6 @@ type (
 		SubprocessorsListURL          *string                  `db:"subprocessors_list_url"`
 		Certifications                []string                 `db:"certifications"`
 		Countries                     CountryCodes             `db:"countries"`
-		BusinessOwnerID               *gid.GID                 `db:"business_owner_profile_id"`
-		SecurityOwnerID               *gid.GID                 `db:"security_owner_profile_id"`
 		StatusPageURL                 *string                  `db:"status_page_url"`
 		TermsOfServiceURL             *string                  `db:"terms_of_service_url"`
 		SecurityPageURL               *string                  `db:"security_page_url"`
@@ -263,8 +261,6 @@ SELECT
     subprocessors_list_url,
     certifications,
     countries,
-    business_owner_profile_id,
-    security_owner_profile_id,
     status_page_url,
     terms_of_service_url,
     security_page_url,
@@ -336,8 +332,6 @@ SELECT
     subprocessors_list_url,
     certifications,
     countries,
-    business_owner_profile_id,
-    security_owner_profile_id,
     status_page_url,
     terms_of_service_url,
     security_page_url,
@@ -411,8 +405,6 @@ SELECT
     subprocessors_list_url,
     certifications,
     countries,
-    business_owner_profile_id,
-    security_owner_profile_id,
     status_page_url,
     terms_of_service_url,
     security_page_url,
@@ -489,8 +481,6 @@ SELECT
     subprocessors_list_url,
     certifications,
     countries,
-    business_owner_profile_id,
-    security_owner_profile_id,
     status_page_url,
     terms_of_service_url,
     security_page_url,
@@ -566,8 +556,6 @@ SELECT
     subprocessors_list_url,
     certifications,
     countries,
-    business_owner_profile_id,
-    security_owner_profile_id,
     status_page_url,
     terms_of_service_url,
     security_page_url,
@@ -638,8 +626,6 @@ INSERT INTO
         subprocessors_list_url,
         certifications,
         countries,
-        business_owner_profile_id,
-        security_owner_profile_id,
         status_page_url,
         terms_of_service_url,
         security_page_url,
@@ -673,8 +659,6 @@ VALUES (
     @subprocessors_list_url,
     @certifications,
     @countries,
-    @business_owner_profile_id,
-    @security_owner_profile_id,
     @status_page_url,
     @terms_of_service_url,
     @security_page_url,
@@ -710,8 +694,6 @@ VALUES (
 		"subprocessors_list_url":           v.SubprocessorsListURL,
 		"certifications":                   v.Certifications,
 		"countries":                        v.Countries,
-		"business_owner_profile_id":        v.BusinessOwnerID,
-		"security_owner_profile_id":        v.SecurityOwnerID,
 		"status_page_url":                  v.StatusPageURL,
 		"terms_of_service_url":             v.TermsOfServiceURL,
 		"security_page_url":                v.SecurityPageURL,
@@ -885,8 +867,6 @@ SELECT
 	subprocessors_list_url,
 	certifications,
 	countries,
-	business_owner_profile_id,
-	security_owner_profile_id,
 	status_page_url,
 	terms_of_service_url,
 	security_page_url,
@@ -957,8 +937,6 @@ SET
 	terms_of_service_url = @terms_of_service_url,
 	security_page_url = @security_page_url,
 	trust_page_url = @trust_page_url,
-	business_owner_profile_id = @business_owner_profile_id,
-	security_owner_profile_id = @security_owner_profile_id,
 	show_on_trust_center = @show_on_trust_center,
 	level = @level,
 	vetting_status = @vetting_status,
@@ -994,8 +972,6 @@ WHERE %s
 		"terms_of_service_url":             v.TermsOfServiceURL,
 		"security_page_url":                v.SecurityPageURL,
 		"trust_page_url":                   v.TrustPageURL,
-		"business_owner_profile_id":        v.BusinessOwnerID,
-		"security_owner_profile_id":        v.SecurityOwnerID,
 		"show_on_trust_center":             v.ShowOnCompliancePortal,
 		"level":                            v.Level,
 		"vetting_status":                   v.VettingStatus,
@@ -1121,8 +1097,6 @@ WITH vend AS (
 		v.subprocessors_list_url,
 		v.certifications,
 		v.countries,
-		v.business_owner_profile_id,
-		v.security_owner_profile_id,
 		v.status_page_url,
 		v.terms_of_service_url,
 		v.security_page_url,
@@ -1161,8 +1135,6 @@ SELECT
 	subprocessors_list_url,
 	certifications,
 	countries,
-	business_owner_profile_id,
-	security_owner_profile_id,
 	status_page_url,
 	terms_of_service_url,
 	security_page_url,
@@ -1270,8 +1242,6 @@ WITH vend AS (
 		v.subprocessors_list_url,
 		v.certifications,
 		v.countries,
-		v.business_owner_profile_id,
-		v.security_owner_profile_id,
 		v.status_page_url,
 		v.terms_of_service_url,
 		v.security_page_url,
@@ -1310,8 +1280,6 @@ SELECT
 	subprocessors_list_url,
 	certifications,
 	countries,
-	business_owner_profile_id,
-	security_owner_profile_id,
 	status_page_url,
 	terms_of_service_url,
 	security_page_url,
@@ -1379,8 +1347,6 @@ WITH vend AS (
 		v.subprocessors_list_url,
 		v.certifications,
 		v.countries,
-		v.business_owner_profile_id,
-		v.security_owner_profile_id,
 		v.status_page_url,
 		v.terms_of_service_url,
 		v.security_page_url,
@@ -1419,8 +1385,6 @@ SELECT
 	subprocessors_list_url,
 	certifications,
 	countries,
-	business_owner_profile_id,
-	security_owner_profile_id,
 	status_page_url,
 	terms_of_service_url,
 	security_page_url,
@@ -1555,8 +1519,6 @@ SELECT
 	subprocessors_list_url,
 	certifications,
 	countries,
-	business_owner_profile_id,
-	security_owner_profile_id,
 	status_page_url,
 	terms_of_service_url,
 	security_page_url,
@@ -1676,8 +1638,6 @@ WITH tps AS (
 		v.subprocessors_list_url,
 		v.certifications,
 		v.countries,
-		v.business_owner_profile_id,
-		v.security_owner_profile_id,
 		v.status_page_url,
 		v.terms_of_service_url,
 		v.security_page_url,
@@ -1716,8 +1676,6 @@ SELECT
 	subprocessors_list_url,
 	certifications,
 	countries,
-	business_owner_profile_id,
-	security_owner_profile_id,
 	status_page_url,
 	terms_of_service_url,
 	security_page_url,
@@ -1814,8 +1772,6 @@ WITH RECURSIVE ancestor_chain AS (
 		tp.subprocessors_list_url,
 		tp.certifications,
 		tp.countries,
-		tp.business_owner_profile_id,
-		tp.security_owner_profile_id,
 		tp.status_page_url,
 		tp.terms_of_service_url,
 		tp.security_page_url,
@@ -1859,8 +1815,6 @@ WITH RECURSIVE ancestor_chain AS (
 		tp.subprocessors_list_url,
 		tp.certifications,
 		tp.countries,
-		tp.business_owner_profile_id,
-		tp.security_owner_profile_id,
 		tp.status_page_url,
 		tp.terms_of_service_url,
 		tp.security_page_url,
@@ -1898,8 +1852,6 @@ SELECT
 	subprocessors_list_url,
 	certifications,
 	countries,
-	business_owner_profile_id,
-	security_owner_profile_id,
 	status_page_url,
 	terms_of_service_url,
 	security_page_url,
@@ -1965,8 +1917,6 @@ SELECT
 	subprocessors_list_url,
 	certifications,
 	countries,
-	business_owner_profile_id,
-	security_owner_profile_id,
 	status_page_url,
 	terms_of_service_url,
 	security_page_url,

pkg/coredata/third_party_administrator.go

@@ -0,0 +1,200 @@
+// Copyright (c) 2025-2026 Probo Inc <hello@probo.com>.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+package coredata
+
+import (
+	"context"
+	"fmt"
+	"maps"
+	"time"
+
+	"github.com/jackc/pgx/v5"
+	"go.gearno.de/kit/pg"
+	"go.probo.inc/probo/pkg/gid"
+)
+
+type (
+	ThirdPartyAdministrator struct {
+		ThirdPartyID           gid.GID   `db:"third_party_id"`
+		AdministratorProfileID gid.GID   `db:"administrator_profile_id"`
+		OrganizationID         gid.GID   `db:"organization_id"`
+		CreatedAt              time.Time `db:"created_at"`
+		UpdatedAt              time.Time `db:"updated_at"`
+	}
+
+	ThirdPartyAdministrators []*ThirdPartyAdministrator
+)
+
+// LoadByThirdPartyID loads all administrators for a third party.
+func (as *ThirdPartyAdministrators) LoadByThirdPartyID(
+	ctx context.Context,
+	conn pg.Querier,
+	scope Scoper,
+	thirdPartyID gid.GID,
+) error {
+	q := `
+SELECT
+	third_party_id,
+	administrator_profile_id,
+	organization_id,
+	created_at,
+	updated_at
+FROM third_party_administrators
+WHERE
+	%s
+	AND third_party_id = @third_party_id
+ORDER BY created_at ASC, administrator_profile_id ASC;
+`
+
+	q = fmt.Sprintf(q, scope.SQLFragment())
+
+	args := pgx.StrictNamedArgs{"third_party_id": thirdPartyID}
+	maps.Copy(args, scope.SQLArguments())
+
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return fmt.Errorf("cannot query third party administrators: %w", err)
+	}
+
+	result, err := pgx.CollectRows(rows, pgx.RowToAddrOfStructByName[ThirdPartyAdministrator])
+	if err != nil {
+		return fmt.Errorf("cannot collect third party administrators: %w", err)
+	}
+
+	*as = result
+
+	return nil
+}
+
+// LoadByThirdPartyIDs loads all administrators for the given third parties.
+func (as *ThirdPartyAdministrators) LoadByThirdPartyIDs(
+	ctx context.Context,
+	conn pg.Querier,
+	scope Scoper,
+	thirdPartyIDs []gid.GID,
+) error {
+	if len(thirdPartyIDs) == 0 {
+		*as = ThirdPartyAdministrators{}
+		return nil
+	}
+
+	q := `
+SELECT
+	third_party_id,
+	administrator_profile_id,
+	organization_id,
+	created_at,
+	updated_at
+FROM third_party_administrators
+WHERE
+	%s
+	AND third_party_id = ANY(@third_party_ids)
+ORDER BY created_at ASC, administrator_profile_id ASC;
+`
+
+	q = fmt.Sprintf(q, scope.SQLFragment())
+
+	args := pgx.StrictNamedArgs{"third_party_ids": thirdPartyIDs}
+	maps.Copy(args, scope.SQLArguments())
+
+	rows, err := conn.Query(ctx, q, args)
+	if err != nil {
+		return fmt.Errorf("cannot query third party administrators: %w", err)
+	}
+
+	result, err := pgx.CollectRows(rows, pgx.RowToAddrOfStructByName[ThirdPartyAdministrator])
+	if err != nil {
+		return fmt.Errorf("cannot collect third party administrators: %w", err)
+	}
+
+	*as = result
+
+	return nil
+}
+
+// MergeByThirdPartyID merges the given administrator profile IDs for a third party,
+// inserting new ones, keeping existing ones, and deleting removed ones.
+func (as *ThirdPartyAdministrators) MergeByThirdPartyID(
+	ctx context.Context,
+	conn pg.Tx,
+	scope Scoper,
+	thirdPartyID gid.GID,
+	organizationID gid.GID,
+	administratorProfileIDs []gid.GID,
+) error {
+	q := `
+MERGE INTO third_party_administrators AS target
+USING (
+	SELECT unnest(@administrator_profile_ids::text[]) AS administrator_profile_id
+) AS source
+ON
+	%[1]s
+	AND target.third_party_id = @third_party_id
+	AND target.administrator_profile_id = source.administrator_profile_id
+WHEN NOT MATCHED THEN
+	INSERT (third_party_id, administrator_profile_id, tenant_id, organization_id, created_at, updated_at)
+	VALUES (@third_party_id, source.administrator_profile_id, @tenant_id, @organization_id, @now, @now)
+WHEN NOT MATCHED BY SOURCE
+	AND %[1]s
+	AND target.third_party_id = @third_party_id THEN
+	DELETE;
+`
+
+	q = fmt.Sprintf(q, scope.SQLFragment())
+
+	now := time.Now()
+
+	ids := make([]string, len(administratorProfileIDs))
+	for i, id := range administratorProfileIDs {
+		ids[i] = id.String()
+	}
+
+	args := pgx.StrictNamedArgs{
+		"third_party_id":            thirdPartyID,
+		"administrator_profile_ids": ids,
+		"tenant_id":                 scope.GetTenantID(),
+		"organization_id":           organizationID,
+		"now":                       now,
+	}
+	maps.Copy(args, scope.SQLArguments())
+
+	if _, err := conn.Exec(ctx, q, args); err != nil {
+		return fmt.Errorf("cannot merge third party administrators: %w", err)
+	}
+
+	result := make(ThirdPartyAdministrators, 0, len(administratorProfileIDs))
+	for _, profileID := range administratorProfileIDs {
+		result = append(
+			result,
+			&ThirdPartyAdministrator{
+				ThirdPartyID:           thirdPartyID,
+				AdministratorProfileID: profileID,
+				OrganizationID:         organizationID,
+				CreatedAt:              now,
+				UpdatedAt:              now,
+			},
+		)
+	}
+
+	*as = result
+
+	return nil
+}

pkg/coredata/third_party_vetting.go

@@ -53,8 +53,6 @@ SELECT
     subprocessors_list_url,
     certifications,
     countries,
-    business_owner_profile_id,
-    security_owner_profile_id,
     status_page_url,
     terms_of_service_url,
     security_page_url,

pkg/docgen/generator.go

@@ -435,8 +435,7 @@ type (
 		TrustPageURL                  string
 		Certifications                string
 		Countries                     string
-		BusinessOwner                 string
-		SecurityOwner                 string
+		Administrators                string
 		Services                      []ThirdPartyListService
 		Contacts                      []ThirdPartyListContact
 		RiskAssessments               []ThirdPartyListRiskAssessment

pkg/probo/generated_document_service.go

@@ -2534,31 +2534,34 @@ func (s *GeneratedDocumentService) buildThirdPartyListDocumentData(
 		}, nil
 	}
 
-	ownerIDSet := make(map[gid.GID]struct{})
-	ownerIDs := make([]gid.GID, 0)
+	thirdPartyIDs := make([]gid.GID, len(thirdParties))
+	for i, v := range thirdParties {
+		thirdPartyIDs[i] = v.ID
+	}
 
-	for _, v := range thirdParties {
-		if v.BusinessOwnerID != nil {
-			if _, ok := ownerIDSet[*v.BusinessOwnerID]; !ok {
-				ownerIDs = append(ownerIDs, *v.BusinessOwnerID)
-				ownerIDSet[*v.BusinessOwnerID] = struct{}{}
-			}
-		}
+	var allAdministrators coredata.ThirdPartyAdministrators
+	if err := allAdministrators.LoadByThirdPartyIDs(ctx, conn, scope, thirdPartyIDs); err != nil {
+		return docgen.ThirdPartyListData{}, fmt.Errorf("cannot load third party administrators: %w", err)
+	}
 
-		if v.SecurityOwnerID != nil {
-			if _, ok := ownerIDSet[*v.SecurityOwnerID]; !ok {
-				ownerIDs = append(ownerIDs, *v.SecurityOwnerID)
-				ownerIDSet[*v.SecurityOwnerID] = struct{}{}
-			}
+	administratorsByThirdParty := make(map[gid.GID][]gid.GID, len(thirdParties))
+	adminIDSet := make(map[gid.GID]struct{})
+	adminIDs := make([]gid.GID, 0)
+
+	for _, a := range allAdministrators {
+		administratorsByThirdParty[a.ThirdPartyID] = append(administratorsByThirdParty[a.ThirdPartyID], a.AdministratorProfileID)
+		if _, ok := adminIDSet[a.AdministratorProfileID]; !ok {
+			adminIDs = append(adminIDs, a.AdministratorProfileID)
+			adminIDSet[a.AdministratorProfileID] = struct{}{}
 		}
 	}
 
 	profileMap := make(map[gid.GID]*coredata.MembershipProfile)
 
-	if len(ownerIDs) > 0 {
+	if len(adminIDs) > 0 {
 		var profiles coredata.MembershipProfiles
-		if err := profiles.LoadByIDs(ctx, conn, scope, ownerIDs); err != nil && !errors.Is(err, coredata.ErrResourceNotFound) {
-			return docgen.ThirdPartyListData{}, fmt.Errorf("cannot load owner profiles: %w", err)
+		if err := profiles.LoadByIDs(ctx, conn, scope, adminIDs); err != nil && !errors.Is(err, coredata.ErrResourceNotFound) {
+			return docgen.ThirdPartyListData{}, fmt.Errorf("cannot load administrator profiles: %w", err)
 		}
 
 		for _, p := range profiles {
@@ -2566,11 +2569,6 @@ func (s *GeneratedDocumentService) buildThirdPartyListDocumentData(
 		}
 	}
 
-	thirdPartyIDs := make([]gid.GID, len(thirdParties))
-	for i, v := range thirdParties {
-		thirdPartyIDs[i] = v.ID
-	}
-
 	var allServices coredata.ThirdPartyServices
 	if err := allServices.LoadByThirdPartyIDs(ctx, conn, scope, thirdPartyIDs); err != nil {
 		return docgen.ThirdPartyListData{}, fmt.Errorf("cannot load thirdParty services: %w", err)
@@ -2651,8 +2649,7 @@ func (s *GeneratedDocumentService) buildThirdPartyListDocumentData(
 			TrustPageURL:                  derefStringOrNotSpecified(v.TrustPageURL),
 			Certifications:                joinOrNotSpecified(v.Certifications),
 			Countries:                     formatCountries(v.Countries),
-			BusinessOwner:                 lookupProfileName(profileMap, v.BusinessOwnerID),
-			SecurityOwner:                 lookupProfileName(profileMap, v.SecurityOwnerID),
+			Administrators:                lookupProfileNames(profileMap, administratorsByThirdParty[v.ID]),
 		}
 
 		for _, vs := range servicesByThirdParty[v.ID] {
@@ -2769,6 +2766,25 @@ func lookupProfileName(profiles map[gid.GID]*coredata.MembershipProfile, id *gid
 	return "Not assigned"
 }
 
+func lookupProfileNames(profiles map[gid.GID]*coredata.MembershipProfile, ids []gid.GID) string {
+	if len(ids) == 0 {
+		return "Not assigned"
+	}
+
+	names := make([]string, 0, len(ids))
+	for _, id := range ids {
+		if p, ok := profiles[id]; ok && p.FullName != "" {
+			names = append(names, p.FullName)
+		}
+	}
+
+	if len(names) == 0 {
+		return "Not assigned"
+	}
+
+	return strings.Join(names, ", ")
+}
+
 func formatDataSensitivity(s coredata.DataSensitivity) string {
 	switch s {
 	case coredata.DataSensitivityNone:

pkg/probo/templates/third_party_list.json.tmpl

@@ -146,20 +146,13 @@
     {
       "type": "heading",
       "attrs": { "level": 3 },
-      "content": [{ "type": "text", "text": {{json (printf "2.%d.3 Owners" (add $i 1))}} }]
+      "content": [{ "type": "text", "text": {{json (printf "2.%d.3 Administrators" (add $i 1))}} }]
     },
     {
       "type": "paragraph",
       "content": [
-        { "type": "text", "text": "Business Owner: ", "marks": [{ "type": "bold" }] },
-        { "type": "text", "text": {{json (default "—" $r.BusinessOwner)}} }
-      ]
-    },
-    {
-      "type": "paragraph",
-      "content": [
-        { "type": "text", "text": "Security Owner: ", "marks": [{ "type": "bold" }] },
-        { "type": "text", "text": {{json (default "—" $r.SecurityOwner)}} }
+        { "type": "text", "text": "Administrators: ", "marks": [{ "type": "bold" }] },
+        { "type": "text", "text": {{json (default "—" $r.Administrators)}} }
       ]
     },
     {

pkg/probo/third_party_service.go

@@ -59,8 +59,7 @@ type (
 		TrustPageURL                  *string
 		TermsOfServiceURL             *string
 		StatusPageURL                 *string
-		BusinessOwnerID               *gid.GID
-		SecurityOwnerID               *gid.GID
+		AdministratorIDs              []gid.GID
 		ParentThirdPartyID            *gid.GID
 	}
 
@@ -83,8 +82,7 @@ type (
 		SecurityPageURL               **string
 		TrustPageURL                  **string
 		StatusPageURL                 **string
-		BusinessOwnerID               **gid.GID
-		SecurityOwnerID               **gid.GID
+		AdministratorIDs              *[]gid.GID
 		ShowOnCompliancePortal        *bool
 	}
 
@@ -130,8 +128,11 @@ func (cvr *CreateThirdPartyRequest) Validate() error {
 	v.Check(cvr.TrustPageURL, "trust_page_url", validator.SafeText(2048))
 	v.Check(cvr.TermsOfServiceURL, "terms_of_service_url", validator.SafeText(2048))
 	v.Check(cvr.StatusPageURL, "status_page_url", validator.SafeText(2048))
-	v.Check(cvr.BusinessOwnerID, "business_owner_id", validator.GID(coredata.MembershipProfileEntityType))
-	v.Check(cvr.SecurityOwnerID, "security_owner_id", validator.GID(coredata.MembershipProfileEntityType))
+	v.Check(len(cvr.AdministratorIDs), "administrator_ids", validator.Max(100))
+	v.Check(cvr.AdministratorIDs, "administrator_ids", validator.NoDuplicates())
+	v.CheckEach(cvr.AdministratorIDs, "administrator_ids", func(_ int, item any) {
+		v.Check(item, "administrator_ids", validator.GID(coredata.MembershipProfileEntityType))
+	})
 
 	return v.Error()
 }
@@ -155,8 +156,14 @@ func (uvr *UpdateThirdPartyRequest) Validate() error {
 	v.Check(uvr.TrustPageURL, "trust_page_url", validator.SafeText(2048))
 	v.Check(uvr.TermsOfServiceURL, "terms_of_service_url", validator.SafeText(2048))
 	v.Check(uvr.StatusPageURL, "status_page_url", validator.SafeText(2048))
-	v.Check(uvr.BusinessOwnerID, "business_owner_id", validator.GID(coredata.MembershipProfileEntityType))
-	v.Check(uvr.SecurityOwnerID, "security_owner_id", validator.GID(coredata.MembershipProfileEntityType))
+
+	if uvr.AdministratorIDs != nil {
+		v.Check(len(*uvr.AdministratorIDs), "administrator_ids", validator.Max(100))
+		v.Check(*uvr.AdministratorIDs, "administrator_ids", validator.NoDuplicates())
+		v.CheckEach(*uvr.AdministratorIDs, "administrator_ids", func(_ int, item any) {
+			v.Check(item, "administrator_ids", validator.GID(coredata.MembershipProfileEntityType))
+		})
+	}
 
 	return v.Error()
 }
@@ -368,7 +375,12 @@ func (s ThirdPartyService) Update(
 				return fmt.Errorf("cannot load thirdParty %q: %w", req.ID, err)
 			}
 
-			previousThirdParty := webhooktypes.NewThirdParty(thirdParty)
+			previousAdministratorIDs, err := loadThirdPartyAdministratorIDs(ctx, conn, scope, thirdParty.ID)
+			if err != nil {
+				return err
+			}
+
+			previousThirdParty := webhooktypes.NewThirdParty(thirdParty, previousAdministratorIDs)
 
 			if req.Name != nil {
 				thirdParty.Name = *req.Name
@@ -446,29 +458,24 @@ func (s ThirdPartyService) Update(
 				thirdParty.Countries = req.Countries
 			}
 
-			if req.BusinessOwnerID != nil {
-				if *req.BusinessOwnerID != nil {
-					businessOwner := &coredata.MembershipProfile{}
-					if err := businessOwner.LoadByID(ctx, conn, scope, **req.BusinessOwnerID); err != nil {
-						return fmt.Errorf("cannot load business owner profile: %w", err)
+			if req.AdministratorIDs != nil {
+				if len(*req.AdministratorIDs) > 0 {
+					profiles := coredata.MembershipProfiles{}
+					if err := profiles.LoadByIDs(ctx, conn, scope, *req.AdministratorIDs); err != nil {
+						return fmt.Errorf("cannot load administrator profiles: %w", err)
 					}
-
-					thirdParty.BusinessOwnerID = &businessOwner.ID
-				} else {
-					thirdParty.BusinessOwnerID = nil
 				}
-			}
 
-			if req.SecurityOwnerID != nil {
-				if *req.SecurityOwnerID != nil {
-					securityOwner := &coredata.MembershipProfile{}
-					if err := securityOwner.LoadByID(ctx, conn, scope, **req.SecurityOwnerID); err != nil {
-						return fmt.Errorf("cannot load security owner profile: %w", err)
-					}
-
-					thirdParty.SecurityOwnerID = &securityOwner.ID
-				} else {
-					thirdParty.SecurityOwnerID = nil
+				administrators := &coredata.ThirdPartyAdministrators{}
+				if err := administrators.MergeByThirdPartyID(
+					ctx,
+					conn,
+					scope,
+					thirdParty.ID,
+					thirdParty.OrganizationID,
+					*req.AdministratorIDs,
+				); err != nil {
+					return fmt.Errorf("cannot merge third party administrators: %w", err)
 				}
 			}
 
@@ -478,13 +485,18 @@ func (s ThirdPartyService) Update(
 				return fmt.Errorf("cannot update thirdParty: %w", err)
 			}
 
+			administratorIDs, err := loadThirdPartyAdministratorIDs(ctx, conn, scope, thirdParty.ID)
+			if err != nil {
+				return err
+			}
+
 			if err := webhook.InsertUpdateData(
 				ctx,
 				conn,
 				scope,
 				thirdParty.OrganizationID,
 				coredata.WebhookEventTypeThirdPartyUpdated,
-				webhooktypes.NewThirdParty(thirdParty),
+				webhooktypes.NewThirdParty(thirdParty, administratorIDs),
 				previousThirdParty,
 			); err != nil {
 				return fmt.Errorf("cannot insert webhook event: %w", err)
@@ -560,13 +572,18 @@ func (s ThirdPartyService) Delete(
 				return fmt.Errorf("cannot load thirdParty: %w", err)
 			}
 
+			administratorIDs, err := loadThirdPartyAdministratorIDs(ctx, conn, scope, thirdParty.ID)
+			if err != nil {
+				return err
+			}
+
 			if err := webhook.InsertData(
 				ctx,
 				conn,
 				scope,
 				thirdParty.OrganizationID,
 				coredata.WebhookEventTypeThirdPartyDeleted,
-				webhooktypes.NewThirdParty(thirdParty),
+				webhooktypes.NewThirdParty(thirdParty, administratorIDs),
 			); err != nil {
 				return fmt.Errorf("cannot insert webhook event: %w", err)
 			}
@@ -642,24 +659,6 @@ func (s ThirdPartyService) Create(
 				return err
 			}
 
-			if req.BusinessOwnerID != nil {
-				businessOwner := &coredata.MembershipProfile{}
-				if err := businessOwner.LoadByID(ctx, conn, scope, *req.BusinessOwnerID); err != nil {
-					return fmt.Errorf("cannot load business owner profile: %w", err)
-				}
-
-				thirdParty.BusinessOwnerID = &businessOwner.ID
-			}
-
-			if req.SecurityOwnerID != nil {
-				securityOwner := &coredata.MembershipProfile{}
-				if err := securityOwner.LoadByID(ctx, conn, scope, *req.SecurityOwnerID); err != nil {
-					return fmt.Errorf("cannot load security owner profile: %w", err)
-				}
-
-				thirdParty.SecurityOwnerID = &securityOwner.ID
-			}
-
 			if req.Category != nil {
 				thirdParty.Category = *req.Category
 			} else {
@@ -670,13 +669,32 @@ func (s ThirdPartyService) Create(
 				return fmt.Errorf("cannot insert thirdParty: %w", err)
 			}
 
+			if len(req.AdministratorIDs) > 0 {
+				profiles := coredata.MembershipProfiles{}
+				if err := profiles.LoadByIDs(ctx, conn, scope, req.AdministratorIDs); err != nil {
+					return fmt.Errorf("cannot load administrator profiles: %w", err)
+				}
+
+				administrators := &coredata.ThirdPartyAdministrators{}
+				if err := administrators.MergeByThirdPartyID(
+					ctx,
+					conn,
+					scope,
+					thirdParty.ID,
+					organization.ID,
+					req.AdministratorIDs,
+				); err != nil {
+					return fmt.Errorf("cannot merge third party administrators: %w", err)
+				}
+			}
+
 			if err := webhook.InsertData(
 				ctx,
 				conn,
 				scope,
 				organization.ID,
 				coredata.WebhookEventTypeThirdPartyCreated,
-				webhooktypes.NewThirdParty(thirdParty),
+				webhooktypes.NewThirdParty(thirdParty, req.AdministratorIDs),
 			); err != nil {
 				return fmt.Errorf("cannot insert webhook event: %w", err)
 			}
@@ -786,7 +804,7 @@ func (s ThirdPartyService) ImportFromCommon(
 					scope,
 					organization.ID,
 					coredata.WebhookEventTypeThirdPartyCreated,
-					webhooktypes.NewThirdParty(thirdParty),
+					webhooktypes.NewThirdParty(thirdParty, nil),
 				); err != nil {
 					return fmt.Errorf("cannot insert webhook event: %w", err)
 				}
@@ -1076,3 +1094,50 @@ func (s ThirdPartyService) ListForParentThirdPartyID(
 
 	return page.NewPage(thirdParties, cursor), nil
 }
+
+func (s ThirdPartyService) MapAdministratorIDsForThirdPartyIDs(
+	ctx context.Context, scope coredata.Scoper,
+	thirdPartyIDs []gid.GID,
+) (map[gid.GID][]gid.GID, error) {
+	result := make(map[gid.GID][]gid.GID, len(thirdPartyIDs))
+	if len(thirdPartyIDs) == 0 {
+		return result, nil
+	}
+
+	var administrators coredata.ThirdPartyAdministrators
+
+	err := s.svc.pg.WithConn(
+		ctx,
+		func(ctx context.Context, conn pg.Querier) error {
+			return administrators.LoadByThirdPartyIDs(ctx, conn, scope, thirdPartyIDs)
+		},
+	)
+	if err != nil {
+		return nil, fmt.Errorf("cannot load third party administrators: %w", err)
+	}
+
+	for _, a := range administrators {
+		result[a.ThirdPartyID] = append(result[a.ThirdPartyID], a.AdministratorProfileID)
+	}
+
+	return result, nil
+}
+
+func loadThirdPartyAdministratorIDs(
+	ctx context.Context,
+	conn pg.Querier,
+	scope coredata.Scoper,
+	thirdPartyID gid.GID,
+) ([]gid.GID, error) {
+	administrators := &coredata.ThirdPartyAdministrators{}
+	if err := administrators.LoadByThirdPartyID(ctx, conn, scope, thirdPartyID); err != nil {
+		return nil, fmt.Errorf("cannot load third party administrators: %w", err)
+	}
+
+	ids := make([]gid.GID, len(*administrators))
+	for i, a := range *administrators {
+		ids[i] = a.AdministratorProfileID
+	}
+
+	return ids, nil
+}

pkg/server/api/console/v1/dataloader/dataloader.go

@@ -58,21 +58,22 @@ type (
 	}
 
 	Loaders struct {
-		Organization         *dataloadgen.Loader[gid.GID, *coredata.Organization]
-		Framework            *dataloadgen.Loader[gid.GID, *coredata.Framework]
-		Control              *dataloadgen.Loader[gid.GID, *coredata.Control]
-		ThirdParty           *dataloadgen.Loader[gid.GID, *coredata.ThirdParty]
-		Document             *dataloadgen.Loader[gid.GID, *coredata.Document]
-		Profile              *dataloadgen.Loader[gid.GID, *coredata.MembershipProfile]
-		Risk                 *dataloadgen.Loader[gid.GID, *coredata.Risk]
-		Measure              *dataloadgen.Loader[gid.GID, *coredata.Measure]
-		Task                 *dataloadgen.Loader[gid.GID, *coredata.Task]
-		File                 *dataloadgen.Loader[gid.GID, *coredata.File]
-		CookieBanner         *dataloadgen.Loader[gid.GID, *coredata.CookieBanner]
-		CookieCategory       *dataloadgen.Loader[gid.GID, *coredata.CookieCategory]
-		CommonTrackerPattern *dataloadgen.Loader[gid.GID, *coredata.CommonTrackerPattern]
-		CommonThirdParty     *dataloadgen.Loader[gid.GID, *coredata.CommonThirdParty]
-		Authorize            *dataloadgen.Loader[AuthorizeKey, AuthorizeResult]
+		Organization               *dataloadgen.Loader[gid.GID, *coredata.Organization]
+		Framework                  *dataloadgen.Loader[gid.GID, *coredata.Framework]
+		Control                    *dataloadgen.Loader[gid.GID, *coredata.Control]
+		ThirdParty                 *dataloadgen.Loader[gid.GID, *coredata.ThirdParty]
+		Document                   *dataloadgen.Loader[gid.GID, *coredata.Document]
+		Profile                    *dataloadgen.Loader[gid.GID, *coredata.MembershipProfile]
+		Risk                       *dataloadgen.Loader[gid.GID, *coredata.Risk]
+		Measure                    *dataloadgen.Loader[gid.GID, *coredata.Measure]
+		Task                       *dataloadgen.Loader[gid.GID, *coredata.Task]
+		File                       *dataloadgen.Loader[gid.GID, *coredata.File]
+		CookieBanner               *dataloadgen.Loader[gid.GID, *coredata.CookieBanner]
+		CookieCategory             *dataloadgen.Loader[gid.GID, *coredata.CookieCategory]
+		CommonTrackerPattern       *dataloadgen.Loader[gid.GID, *coredata.CommonTrackerPattern]
+		CommonThirdParty           *dataloadgen.Loader[gid.GID, *coredata.CommonThirdParty]
+		ThirdPartyAdministratorIDs *dataloadgen.Loader[gid.GID, []gid.GID]
+		Authorize                  *dataloadgen.Loader[AuthorizeKey, AuthorizeResult]
 	}
 
 	batchFetcher struct {
@@ -109,20 +110,21 @@ func NewMiddleware(proboSvc *probo.Service, iamSvc *iam.Service, cookieBannerSvc
 
 func (f *batchFetcher) newLoaders() *Loaders {
 	return &Loaders{
-		Organization:         dataloadgen.NewMappedLoader(f.fetchOrganizations),
-		Framework:            dataloadgen.NewMappedLoader(f.fetchFrameworks),
-		Control:              dataloadgen.NewMappedLoader(f.fetchControls),
-		ThirdParty:           dataloadgen.NewMappedLoader(f.fetchThirdParties),
-		Document:             dataloadgen.NewMappedLoader(f.fetchDocuments),
-		Profile:              dataloadgen.NewMappedLoader(f.fetchProfiles),
-		Risk:                 dataloadgen.NewMappedLoader(f.fetchRisks),
-		Measure:              dataloadgen.NewMappedLoader(f.fetchMeasures),
-		Task:                 dataloadgen.NewMappedLoader(f.fetchTasks),
-		File:                 dataloadgen.NewMappedLoader(f.fetchFiles),
-		CookieBanner:         dataloadgen.NewMappedLoader(f.fetchCookieBanners),
-		CookieCategory:       dataloadgen.NewMappedLoader(f.fetchCookieCategories),
-		CommonTrackerPattern: dataloadgen.NewMappedLoader(f.fetchCommonTrackerPatterns),
-		CommonThirdParty:     dataloadgen.NewMappedLoader(f.fetchCommonThirdParties),
+		Organization:               dataloadgen.NewMappedLoader(f.fetchOrganizations),
+		Framework:                  dataloadgen.NewMappedLoader(f.fetchFrameworks),
+		Control:                    dataloadgen.NewMappedLoader(f.fetchControls),
+		ThirdParty:                 dataloadgen.NewMappedLoader(f.fetchThirdParties),
+		Document:                   dataloadgen.NewMappedLoader(f.fetchDocuments),
+		Profile:                    dataloadgen.NewMappedLoader(f.fetchProfiles),
+		Risk:                       dataloadgen.NewMappedLoader(f.fetchRisks),
+		Measure:                    dataloadgen.NewMappedLoader(f.fetchMeasures),
+		Task:                       dataloadgen.NewMappedLoader(f.fetchTasks),
+		File:                       dataloadgen.NewMappedLoader(f.fetchFiles),
+		CookieBanner:               dataloadgen.NewMappedLoader(f.fetchCookieBanners),
+		CookieCategory:             dataloadgen.NewMappedLoader(f.fetchCookieCategories),
+		CommonTrackerPattern:       dataloadgen.NewMappedLoader(f.fetchCommonTrackerPatterns),
+		CommonThirdParty:           dataloadgen.NewMappedLoader(f.fetchCommonThirdParties),
+		ThirdPartyAdministratorIDs: dataloadgen.NewMappedLoader(f.fetchThirdPartyAdministratorIDs),
 		Authorize: dataloadgen.NewMappedLoader(
 			f.fetchAuthorizes,
 			dataloadgen.WithoutCache(),
@@ -350,6 +352,26 @@ func (f *batchFetcher) fetchCommonThirdParties(ctx context.Context, keys []gid.G
 	return result, nil
 }
 
+func (f *batchFetcher) fetchThirdPartyAdministratorIDs(ctx context.Context, keys []gid.GID) (map[gid.GID][]gid.GID, error) {
+	scope := coredata.NewScopeFromObjectID(keys[0])
+
+	administratorIDsByThirdPartyID, err := f.probo.ThirdParties.MapAdministratorIDsForThirdPartyIDs(ctx, scope, keys)
+	if err != nil {
+		return nil, fmt.Errorf("cannot batch load third party administrator ids: %w", err)
+	}
+
+	result := make(map[gid.GID][]gid.GID, len(keys))
+	for _, id := range keys {
+		if ids, ok := administratorIDsByThirdPartyID[id]; ok {
+			result[id] = ids
+		} else {
+			result[id] = []gid.GID{}
+		}
+	}
+
+	return result, nil
+}
+
 // fetchAuthorizes evaluates the batch with a single AuthorizeMulti call and
 // surfaces per-key denials via dataloadgen.MappedFetchError. When
 // AuthorizeMulti cannot evaluate the batch as a whole (e.g. mixed

pkg/server/api/console/v1/graphql/third_party.graphql

@@ -285,8 +285,7 @@ type ThirdParty implements Node {
         filter: MeasureFilter
     ): MeasureConnection! @goField(forceResolver: true)
 
-    businessOwner: Profile @goField(forceResolver: true)
-    securityOwner: Profile @goField(forceResolver: true)
+    administrators: [Profile!]! @goField(forceResolver: true)
 
     statusPageUrl: String
     termsOfServiceUrl: String
@@ -540,8 +539,7 @@ input CreateThirdPartyInput {
     trustPageUrl: String
     statusPageUrl: String
     termsOfServiceUrl: String
-    businessOwnerId: ID
-    securityOwnerId: ID
+    administratorIds: [ID!]
     parentThirdPartyId: ID
 }
 
@@ -564,8 +562,7 @@ input UpdateThirdPartyInput {
     countries: [CountryCode!]
     securityPageUrl: String @goField(omittable: true)
     trustPageUrl: String @goField(omittable: true)
-    businessOwnerId: ID @goField(omittable: true)
-    securityOwnerId: ID @goField(omittable: true)
+    administratorIds: [ID!]
     showOnCompliancePortal: Boolean
 }
 

pkg/server/api/console/v1/third_party_resolvers.go

@@ -14,6 +14,7 @@ import (
 	"github.com/vikstrous/dataloadgen"
 	"go.gearno.de/kit/log"
 	"go.probo.inc/probo/pkg/coredata"
+	"go.probo.inc/probo/pkg/gid"
 	"go.probo.inc/probo/pkg/iam"
 	"go.probo.inc/probo/pkg/page"
 	"go.probo.inc/probo/pkg/probo"
@@ -58,8 +59,7 @@ func (r *mutationResolver) CreateThirdParty(ctx context.Context, input types.Cre
 			Certifications:                input.Certifications,
 			SecurityPageURL:               input.SecurityPageURL,
 			TrustPageURL:                  input.TrustPageURL,
-			BusinessOwnerID:               input.BusinessOwnerID,
-			SecurityOwnerID:               input.SecurityOwnerID,
+			AdministratorIDs:              input.AdministratorIds,
 			Countries:                     input.Countries,
 			ParentThirdPartyID:            input.ParentThirdPartyID,
 		},
@@ -120,6 +120,11 @@ func (r *mutationResolver) UpdateThirdParty(ctx context.Context, input types.Upd
 		return nil, err
 	}
 
+	var administratorIDs *[]gid.GID
+	if input.AdministratorIds != nil {
+		administratorIDs = &input.AdministratorIds
+	}
+
 	thirdParty, err := r.probo.ThirdParties.Update(
 		ctx, scope,
 		probo.UpdateThirdPartyRequest{
@@ -140,8 +145,7 @@ func (r *mutationResolver) UpdateThirdParty(ctx context.Context, input types.Upd
 			WebsiteURL:                    gqlutils.UnwrapOmittable(input.WebsiteURL),
 			Category:                      input.Category,
 			Certifications:                input.Certifications,
-			BusinessOwnerID:               gqlutils.UnwrapOmittable(input.BusinessOwnerID),
-			SecurityOwnerID:               gqlutils.UnwrapOmittable(input.SecurityOwnerID),
+			AdministratorIDs:              administratorIDs,
 			ShowOnCompliancePortal:        input.ShowOnCompliancePortal,
 			Countries:                     input.Countries,
 		},
@@ -855,56 +859,45 @@ func (r *thirdPartyResolver) Measures(ctx context.Context, obj *types.ThirdParty
 	return types.NewMeasureConnection(page, r, obj.ID, measureFilter), nil
 }
 
-// BusinessOwner is the resolver for the businessOwner field.
-func (r *thirdPartyResolver) BusinessOwner(ctx context.Context, obj *types.ThirdParty) (*types.Profile, error) {
-	if obj.BusinessOwner == nil {
-		return nil, nil
-	}
-
-	if _, err := r.authorize(ctx, obj.BusinessOwner.ID, iam.ActionMembershipProfileGet); err != nil {
+// Administrators is the resolver for the administrators field.
+func (r *thirdPartyResolver) Administrators(ctx context.Context, obj *types.ThirdParty) ([]*types.Profile, error) {
+	if _, err := r.authorize(ctx, obj.ID, probo.ActionThirdPartyGet); err != nil {
 		return nil, err
 	}
 
 	loaders := dataloader.FromContext(ctx)
 
-	businessOwner, err := loaders.Profile.Load(ctx, obj.BusinessOwner.ID)
+	administratorIDs, err := loaders.ThirdPartyAdministratorIDs.Load(ctx, obj.ID)
 	if err != nil {
-		if errors.Is(err, coredata.ErrResourceNotFound) || errors.Is(err, dataloadgen.ErrNotFound) {
-			return nil, gqlutils.NotFound(ctx, err)
-		}
-
-		r.logger.ErrorCtx(ctx, "cannot get business owner", log.Error(err))
-
+		r.logger.ErrorCtx(ctx, "cannot get third party administrator ids", log.Error(err))
 		return nil, gqlutils.Internal(ctx)
 	}
 
-	return types.NewProfile(businessOwner), nil
-}
-
-// SecurityOwner is the resolver for the securityOwner field.
-func (r *thirdPartyResolver) SecurityOwner(ctx context.Context, obj *types.ThirdParty) (*types.Profile, error) {
-	if obj.SecurityOwner == nil {
-		return nil, nil
+	if len(administratorIDs) == 0 {
+		return []*types.Profile{}, nil
 	}
 
-	if _, err := r.authorize(ctx, obj.SecurityOwner.ID, iam.ActionMembershipProfileGet); err != nil {
+	if _, err := r.batchAuthorize(ctx, iam.ActionMembershipProfileGet, administratorIDs); err != nil {
 		return nil, err
 	}
 
-	loaders := dataloader.FromContext(ctx)
-
-	securityOwner, err := loaders.Profile.Load(ctx, obj.SecurityOwner.ID)
+	profiles, err := loaders.Profile.LoadAll(ctx, administratorIDs)
 	if err != nil {
 		if errors.Is(err, coredata.ErrResourceNotFound) || errors.Is(err, dataloadgen.ErrNotFound) {
 			return nil, gqlutils.NotFound(ctx, err)
 		}
 
-		r.logger.ErrorCtx(ctx, "cannot get security owner", log.Error(err))
+		r.logger.ErrorCtx(ctx, "cannot get third party administrators", log.Error(err))
 
 		return nil, gqlutils.Internal(ctx)
 	}
 
-	return types.NewProfile(securityOwner), nil
+	result := make([]*types.Profile, len(profiles))
+	for i, p := range profiles {
+		result[i] = types.NewProfile(p)
+	}
+
+	return result, nil
 }
 
 // ParentThirdParty is the resolver for the parentThirdParty field.

pkg/server/api/console/v1/types/third_party.go

@@ -98,18 +98,6 @@ func NewThirdParty(v *coredata.ThirdParty) *ThirdParty {
 		CreatedAt:                     v.CreatedAt,
 	}
 
-	if v.BusinessOwnerID != nil {
-		object.BusinessOwner = &Profile{
-			ID: *v.BusinessOwnerID,
-		}
-	}
-
-	if v.SecurityOwnerID != nil {
-		object.SecurityOwner = &Profile{
-			ID: *v.SecurityOwnerID,
-		}
-	}
-
 	if v.ParentThirdPartyID != nil {
 		object.ParentThirdParty = &ThirdParty{
 			ID: *v.ParentThirdPartyID,

pkg/server/api/mcp/v1/schema.resolvers.go

@@ -90,7 +90,17 @@ func (r *Resolver) ListThirdPartiesTool(ctx context.Context, req *mcp.CallToolRe
 		panic(fmt.Errorf("cannot list organization thirdParties: %w", err))
 	}
 
-	return nil, types.NewListThirdPartiesOutput(page), nil
+	thirdPartyIDs := make([]gid.GID, len(page.Data))
+	for i, tp := range page.Data {
+		thirdPartyIDs[i] = tp.ID
+	}
+
+	administratorIDsByThirdPartyID, err := prb.ThirdParties.MapAdministratorIDsForThirdPartyIDs(ctx, scope, thirdPartyIDs)
+	if err != nil {
+		return nil, types.ListThirdPartiesOutput{}, fmt.Errorf("cannot load third party administrators: %w", err)
+	}
+
+	return nil, types.NewListThirdPartiesOutput(page, administratorIDsByThirdPartyID), nil
 }
 
 // AddThirdPartyTool handles the addThirdParty tool
@@ -135,8 +145,7 @@ func (r *Resolver) AddThirdPartyTool(ctx context.Context, req *mcp.CallToolReque
 			SubprocessorsListURL:          input.SubprocessorsListURL,
 			Certifications:                input.Certifications,
 			Countries:                     countries,
-			BusinessOwnerID:               input.BusinessOwnerID,
-			SecurityOwnerID:               input.SecurityOwnerID,
+			AdministratorIDs:              input.AdministratorIds,
 			StatusPageURL:                 input.StatusPageURL,
 			TermsOfServiceURL:             input.TermsOfServiceURL,
 			SecurityPageURL:               input.SecurityPageURL,
@@ -147,7 +156,7 @@ func (r *Resolver) AddThirdPartyTool(ctx context.Context, req *mcp.CallToolReque
 		return nil, types.AddThirdPartyOutput{}, fmt.Errorf("failed to create thirdParty: %w", err)
 	}
 
-	return nil, types.NewAddThirdPartyOutput(thirdParty), nil
+	return nil, types.NewAddThirdPartyOutput(thirdParty, input.AdministratorIds), nil
 }
 
 // UpdateThirdPartyTool handles the updateThirdParty tool
@@ -225,14 +234,9 @@ func (r *Resolver) UpdateThirdPartyTool(ctx context.Context, req *mcp.CallToolRe
 		trustPageURL = &input.TrustPageURL
 	}
 
-	var businessOwnerID **gid.GID
-	if input.BusinessOwnerID != nil {
-		businessOwnerID = &input.BusinessOwnerID
-	}
-
-	var securityOwnerID **gid.GID
-	if input.SecurityOwnerID != nil {
-		securityOwnerID = &input.SecurityOwnerID
+	var administratorIDs *[]gid.GID
+	if input.AdministratorIds != nil {
+		administratorIDs = &input.AdministratorIds
 	}
 
 	var category *coredata.ThirdPartyCategory
@@ -267,8 +271,7 @@ func (r *Resolver) UpdateThirdPartyTool(ctx context.Context, req *mcp.CallToolRe
 			SubprocessorsListURL:          subprocessorsListURL,
 			Certifications:                input.Certifications,
 			Countries:                     countries,
-			BusinessOwnerID:               businessOwnerID,
-			SecurityOwnerID:               securityOwnerID,
+			AdministratorIDs:              administratorIDs,
 			StatusPageURL:                 statusPageURL,
 			TermsOfServiceURL:             termsOfServiceURL,
 			SecurityPageURL:               securityPageURL,
@@ -279,7 +282,12 @@ func (r *Resolver) UpdateThirdPartyTool(ctx context.Context, req *mcp.CallToolRe
 		return nil, types.UpdateThirdPartyOutput{}, fmt.Errorf("failed to update thirdParty: %w", err)
 	}
 
-	return nil, types.NewUpdateThirdPartyOutput(thirdParty), nil
+	administratorIDsByThirdPartyID, err := svc.ThirdParties.MapAdministratorIDsForThirdPartyIDs(ctx, scope, []gid.GID{thirdParty.ID})
+	if err != nil {
+		return nil, types.UpdateThirdPartyOutput{}, fmt.Errorf("cannot load third party administrators: %w", err)
+	}
+
+	return nil, types.NewUpdateThirdPartyOutput(thirdParty, administratorIDsByThirdPartyID[thirdParty.ID]), nil
 }
 
 func (r *Resolver) ListRisksTool(ctx context.Context, req *mcp.CallToolRequest, input *types.ListRisksInput) (*mcp.CallToolResult, types.ListRisksOutput, error) {
@@ -5414,8 +5422,13 @@ func (r *Resolver) VetThirdPartyTool(ctx context.Context, req *mcp.CallToolReque
 		return nil, types.VetThirdPartyOutput{}, fmt.Errorf("internal server error")
 	}
 
+	administratorIDsByThirdPartyID, err := r.proboSvc.ThirdParties.MapAdministratorIDsForThirdPartyIDs(ctx, scope, []gid.GID{thirdParty.ID})
+	if err != nil {
+		return nil, types.VetThirdPartyOutput{}, fmt.Errorf("cannot load third party administrators: %w", err)
+	}
+
 	return nil, types.VetThirdPartyOutput{
-		ThirdParty: types.NewThirdParty(thirdParty),
+		ThirdParty: types.NewThirdParty(thirdParty, administratorIDsByThirdPartyID[thirdParty.ID]),
 	}, nil
 }
 
@@ -6318,7 +6331,17 @@ func (r *Resolver) ListChildThirdPartiesTool(ctx context.Context, req *mcp.CallT
 		panic(fmt.Errorf("cannot list child third parties: %w", err))
 	}
 
-	return nil, types.NewListChildThirdPartiesOutput(page), nil
+	thirdPartyIDs := make([]gid.GID, len(page.Data))
+	for i, tp := range page.Data {
+		thirdPartyIDs[i] = tp.ID
+	}
+
+	administratorIDsByThirdPartyID, err := r.proboSvc.ThirdParties.MapAdministratorIDsForThirdPartyIDs(ctx, scope, thirdPartyIDs)
+	if err != nil {
+		return nil, types.ListChildThirdPartiesOutput{}, fmt.Errorf("cannot load third party administrators: %w", err)
+	}
+
+	return nil, types.NewListChildThirdPartiesOutput(page, administratorIDsByThirdPartyID), nil
 }
 
 func (r *Resolver) ListRiskAssessmentsTool(ctx context.Context, req *mcp.CallToolRequest, input *types.ListRiskAssessmentsInput) (*mcp.CallToolResult, types.ListRiskAssessmentsOutput, error) {
@@ -7658,8 +7681,13 @@ func (r *Resolver) GetThirdPartyTool(ctx context.Context, req *mcp.CallToolReque
 		return nil, types.GetThirdPartyOutput{}, fmt.Errorf("cannot get third party: %w", err)
 	}
 
+	administratorIDsByThirdPartyID, err := r.proboSvc.ThirdParties.MapAdministratorIDsForThirdPartyIDs(ctx, scope, []gid.GID{thirdParty.ID})
+	if err != nil {
+		return nil, types.GetThirdPartyOutput{}, fmt.Errorf("cannot load third party administrators: %w", err)
+	}
+
 	return nil, types.GetThirdPartyOutput{
-		ThirdParty: types.NewThirdParty(thirdParty),
+		ThirdParty: types.NewThirdParty(thirdParty, administratorIDsByThirdPartyID[thirdParty.ID]),
 	}, nil
 }
 

pkg/server/api/mcp/v1/specification.yaml

@@ -825,16 +825,11 @@ components:
           items:
             type: string
           description: Countries or regions (ISO 3166-1 alpha-2 country codes, EU, or GLOBAL)
-        business_owner_id:
-          anyOf:
-            - $ref: "#/components/schemas/GID"
-            - type: "null"
-          description: Business owner ID
-        security_owner_id:
-          anyOf:
-            - $ref: "#/components/schemas/GID"
-            - type: "null"
-          description: Security owner ID
+        administrator_ids:
+          type: array
+          items:
+            $ref: "#/components/schemas/GID"
+          description: Administrator profile IDs
         status_page_url:
           type:
             - string
@@ -1051,12 +1046,11 @@ components:
           items:
             type: string
           description: Countries or regions (ISO 3166-1 alpha-2 country codes, EU, or GLOBAL)
-        business_owner_id:
-          $ref: "#/components/schemas/GID"
-          description: Business owner ID
-        security_owner_id:
-          $ref: "#/components/schemas/GID"
-          description: Security owner ID
+        administrator_ids:
+          type: array
+          items:
+            $ref: "#/components/schemas/GID"
+          description: Administrator profile IDs
         status_page_url:
           type: string
           description: Status page URL
@@ -1152,12 +1146,11 @@ components:
           items:
             type: string
           description: Countries or regions (ISO 3166-1 alpha-2 country codes, EU, or GLOBAL)
-        business_owner_id:
-          $ref: "#/components/schemas/GID"
-          description: Business owner ID
-        security_owner_id:
-          $ref: "#/components/schemas/GID"
-          description: Security owner ID
+        administrator_ids:
+          type: array
+          items:
+            $ref: "#/components/schemas/GID"
+          description: Administrator profile IDs
         status_page_url:
           type: string
           description: Status page URL

pkg/server/api/mcp/v1/types/third_party.go

@@ -22,6 +22,7 @@ package types
 
 import (
 	"go.probo.inc/probo/pkg/coredata"
+	"go.probo.inc/probo/pkg/gid"
 	"go.probo.inc/probo/pkg/page"
 )
 
@@ -64,12 +65,16 @@ func NewAddThirdPartyRiskAssessmentOutput(v *coredata.ThirdPartyRiskAssessment)
 	}
 }
 
-func NewThirdParty(v *coredata.ThirdParty) *ThirdParty {
+func NewThirdParty(v *coredata.ThirdParty, administratorIDs []gid.GID) *ThirdParty {
 	countries := make([]string, len(v.Countries))
 	for i, c := range v.Countries {
 		countries[i] = string(c)
 	}
 
+	if administratorIDs == nil {
+		administratorIDs = []gid.GID{}
+	}
+
 	return &ThirdParty{
 		ID:                            v.ID,
 		OrganizationID:                v.OrganizationID,
@@ -86,8 +91,7 @@ func NewThirdParty(v *coredata.ThirdParty) *ThirdParty {
 		SubprocessorsListURL:          v.SubprocessorsListURL,
 		Certifications:                v.Certifications,
 		Countries:                     countries,
-		BusinessOwnerID:               v.BusinessOwnerID,
-		SecurityOwnerID:               v.SecurityOwnerID,
+		AdministratorIds:              administratorIDs,
 		StatusPageURL:                 v.StatusPageURL,
 		TermsOfServiceURL:             v.TermsOfServiceURL,
 		SecurityPageURL:               v.SecurityPageURL,
@@ -98,10 +102,13 @@ func NewThirdParty(v *coredata.ThirdParty) *ThirdParty {
 	}
 }
 
-func NewListThirdPartiesOutput(thirdPartyPage *page.Page[*coredata.ThirdParty, coredata.ThirdPartyOrderField]) ListThirdPartiesOutput {
+func NewListThirdPartiesOutput(
+	thirdPartyPage *page.Page[*coredata.ThirdParty, coredata.ThirdPartyOrderField],
+	administratorIDsByThirdPartyID map[gid.GID][]gid.GID,
+) ListThirdPartiesOutput {
 	thirdParties := make([]*ThirdParty, 0, len(thirdPartyPage.Data))
 	for _, v := range thirdPartyPage.Data {
-		thirdParties = append(thirdParties, NewThirdParty(v))
+		thirdParties = append(thirdParties, NewThirdParty(v, administratorIDsByThirdPartyID[v.ID]))
 	}
 
 	var nextCursor *page.CursorKey
@@ -117,10 +124,13 @@ func NewListThirdPartiesOutput(thirdPartyPage *page.Page[*coredata.ThirdParty, c
 	}
 }
 
-func NewListChildThirdPartiesOutput(thirdPartyPage *page.Page[*coredata.ThirdParty, coredata.ThirdPartyOrderField]) ListChildThirdPartiesOutput {
+func NewListChildThirdPartiesOutput(
+	thirdPartyPage *page.Page[*coredata.ThirdParty, coredata.ThirdPartyOrderField],
+	administratorIDsByThirdPartyID map[gid.GID][]gid.GID,
+) ListChildThirdPartiesOutput {
 	thirdParties := make([]*ThirdParty, 0, len(thirdPartyPage.Data))
 	for _, v := range thirdPartyPage.Data {
-		thirdParties = append(thirdParties, NewThirdParty(v))
+		thirdParties = append(thirdParties, NewThirdParty(v, administratorIDsByThirdPartyID[v.ID]))
 	}
 
 	var nextCursor *page.CursorKey
@@ -136,15 +146,15 @@ func NewListChildThirdPartiesOutput(thirdPartyPage *page.Page[*coredata.ThirdPar
 	}
 }
 
-func NewAddThirdPartyOutput(v *coredata.ThirdParty) AddThirdPartyOutput {
+func NewAddThirdPartyOutput(v *coredata.ThirdParty, administratorIDs []gid.GID) AddThirdPartyOutput {
 	return AddThirdPartyOutput{
-		ThirdParty: NewThirdParty(v),
+		ThirdParty: NewThirdParty(v, administratorIDs),
 	}
 }
 
-func NewUpdateThirdPartyOutput(v *coredata.ThirdParty) UpdateThirdPartyOutput {
+func NewUpdateThirdPartyOutput(v *coredata.ThirdParty, administratorIDs []gid.GID) UpdateThirdPartyOutput {
 	return UpdateThirdPartyOutput{
-		ThirdParty: NewThirdParty(v),
+		ThirdParty: NewThirdParty(v, administratorIDs),
 	}
 }
 

pkg/webhook/types/third_party.go

@@ -46,13 +46,16 @@ type ThirdParty struct {
 	HeadquarterAddress            *string                     `json:"headquarterAddress"`
 	LegalName                     *string                     `json:"legalName"`
 	WebsiteURL                    *string                     `json:"websiteUrl"`
-	BusinessOwnerID               *gid.GID                    `json:"businessOwnerId"`
-	SecurityOwnerID               *gid.GID                    `json:"securityOwnerId"`
+	AdministratorIDs              []gid.GID                   `json:"administratorIds"`
 	CreatedAt                     time.Time                   `json:"createdAt"`
 	UpdatedAt                     time.Time                   `json:"updatedAt"`
 }
 
-func NewThirdParty(v *coredata.ThirdParty) *ThirdParty {
+func NewThirdParty(v *coredata.ThirdParty, administratorIDs []gid.GID) *ThirdParty {
+	if administratorIDs == nil {
+		administratorIDs = []gid.GID{}
+	}
+
 	return &ThirdParty{
 		ID:                            v.ID,
 		Name:                          v.Name,
@@ -72,8 +75,7 @@ func NewThirdParty(v *coredata.ThirdParty) *ThirdParty {
 		HeadquarterAddress:            v.HeadquarterAddress,
 		LegalName:                     v.LegalName,
 		WebsiteURL:                    v.WebsiteURL,
-		BusinessOwnerID:               v.BusinessOwnerID,
-		SecurityOwnerID:               v.SecurityOwnerID,
+		AdministratorIDs:              administratorIDs,
 		CreatedAt:                     v.CreatedAt,
 		UpdatedAt:                     v.UpdatedAt,
 	}