diff --git a/pkg/coredata/trust_center_access.go b/pkg/coredata/trust_center_access.go
index ec4cc342c..9195de6c0 100644
--- a/pkg/coredata/trust_center_access.go
+++ b/pkg/coredata/trust_center_access.go
@@ -16,6 +16,7 @@ package coredata
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"maps"
 	"time"
@@ -39,8 +40,16 @@ type (
 	}
 
 	TrustCenterAccesses []*TrustCenterAccess
+
+	ErrTrustCenterAccessNotFound struct {
+		Identifier string
+	}
 )
 
+func (e ErrTrustCenterAccessNotFound) Error() string {
+	return fmt.Sprintf("trust center access not found: %s", e.Identifier)
+}
+
 func (tca *TrustCenterAccess) CursorKey(orderBy TrustCenterAccessOrderField) page.CursorKey {
 	switch orderBy {
 	case TrustCenterAccessOrderFieldCreatedAt:
@@ -86,6 +95,10 @@ LIMIT 1;
 
 	access, err := pgx.CollectExactlyOneRow(rows, pgx.RowToStructByName[TrustCenterAccess])
 	if err != nil {
+		if errors.Is(err, pgx.ErrNoRows) {
+			return &ErrTrustCenterAccessNotFound{Identifier: accessID.String()}
+		}
+
 		return fmt.Errorf("cannot collect trust center access: %w", err)
 	}
 
@@ -135,6 +148,10 @@ LIMIT 1;
 
 	access, err := pgx.CollectExactlyOneRow(rows, pgx.RowToStructByName[TrustCenterAccess])
 	if err != nil {
+		if errors.Is(err, pgx.ErrNoRows) {
+			return &ErrTrustCenterAccessNotFound{Identifier: fmt.Sprintf("trust_center_id=%s, email=%s", trustCenterID, email)}
+		}
+
 		return fmt.Errorf("cannot collect trust center access: %w", err)
 	}
 
diff --git a/pkg/probo/trust_center_access_service.go b/pkg/probo/trust_center_access_service.go
index 632ed0062..47538dea6 100644
--- a/pkg/probo/trust_center_access_service.go
+++ b/pkg/probo/trust_center_access_service.go
@@ -27,7 +27,6 @@ import (
 	"github.com/getprobo/probo/pkg/page"
 	"github.com/getprobo/probo/pkg/statelesstoken"
 	"github.com/getprobo/probo/pkg/usrmgr"
-	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 )
 
@@ -142,10 +141,11 @@ func (s TrustCenterAccessService) Create(
 			if err := existingAccess.Delete(ctx, tx, s.svc.scope); err != nil {
 				return fmt.Errorf("cannot delete existing trust center access: %w", err)
 			}
-		}
-
-		if err != nil && !errors.Is(err, pgx.ErrNoRows) {
-			return fmt.Errorf("cannot load trust center access: %w", err)
+		} else {
+			var notFoundErr *coredata.ErrTrustCenterAccessNotFound
+			if !errors.As(err, &notFoundErr) {
+				return fmt.Errorf("cannot load trust center access: %w", err)
+			}
 		}
 
 		access = &coredata.TrustCenterAccess{
diff --git a/pkg/trust/trust_center_access_service.go b/pkg/trust/trust_center_access_service.go
index 51a2e7954..acfadf947 100644
--- a/pkg/trust/trust_center_access_service.go
+++ b/pkg/trust/trust_center_access_service.go
@@ -26,7 +26,6 @@ import (
 	"github.com/getprobo/probo/pkg/probo"
 	"github.com/getprobo/probo/pkg/statelesstoken"
 	"github.com/getprobo/probo/pkg/usrmgr"
-	"github.com/jackc/pgx/v5"
 	"go.gearno.de/kit/pg"
 )
 
@@ -108,10 +107,11 @@ func (s TrustCenterAccessService) Create(
 			if err := existingAccess.Delete(ctx, tx, s.svc.scope); err != nil {
 				return fmt.Errorf("cannot delete existing trust center access: %w", err)
 			}
-		}
-
-		if err != nil && !errors.Is(err, pgx.ErrNoRows) {
-			return fmt.Errorf("cannot load trust center access: %w", err)
+		} else {
+			var notFoundErr *coredata.ErrTrustCenterAccessNotFound
+			if !errors.As(err, &notFoundErr) {
+				return fmt.Errorf("cannot load trust center access: %w", err)
+			}
 		}
 
 		access = &coredata.TrustCenterAccess{