diff --git a/packages/core/src/routes/organization/index.ts b/packages/core/src/routes/organization/index.ts
index aa584885d..7d94d8363 100644
--- a/packages/core/src/routes/organization/index.ts
+++ b/packages/core/src/routes/organization/index.ts
@@ -10,6 +10,7 @@ import { type AuthedRouter, type RouterInitArgs } from '../types.js';
 
 import organizationRoleRoutes from './roles.js';
 import organizationScopeRoutes from './scopes.js';
+import { errorHandler } from './utils.js';
 
 export default function organizationRoutes<T extends AuthedRouter>(...args: RouterInitArgs<T>) {
   const [
@@ -18,7 +19,9 @@ export default function organizationRoutes<T extends AuthedRouter>(...args: Rout
       queries: { organizations, users },
     },
   ] = args;
-  const router = new SchemaRouter(Organizations, new SchemaActions(organizations));
+  const router = new SchemaRouter(Organizations, new SchemaActions(organizations), {
+    errorHandler,
+  });
 
   router.addRelationRoutes(organizations.relations.users);
 
diff --git a/packages/core/src/routes/organization/roles.ts b/packages/core/src/routes/organization/roles.ts
index 3d4286e7a..ab81b424e 100644
--- a/packages/core/src/routes/organization/roles.ts
+++ b/packages/core/src/routes/organization/roles.ts
@@ -1,37 +1,12 @@
-import {
-  type CreateOrganizationRole,
-  type OrganizationRole,
-  type OrganizationRoleKeys,
-  OrganizationRoles,
-} from '@logto/schemas';
-import { UniqueIntegrityConstraintViolationError } from 'slonik';
+import { type CreateOrganizationRole, OrganizationRoles } from '@logto/schemas';
 import { z } from 'zod';
 
-import RequestError from '#src/errors/RequestError/index.js';
 import koaGuard from '#src/middleware/koa-guard.js';
 import SchemaRouter, { SchemaActions } from '#src/utils/SchemaRouter.js';
 
 import { type AuthedRouter, type RouterInitArgs } from '../types.js';
 
-class OrganizationRoleActions extends SchemaActions<
-  OrganizationRoleKeys,
-  CreateOrganizationRole,
-  OrganizationRole
-> {
-  override async post(
-    data: Omit<CreateOrganizationRole, 'id'>
-  ): Promise<Readonly<OrganizationRole>> {
-    try {
-      return await super.post(data);
-    } catch (error: unknown) {
-      if (error instanceof UniqueIntegrityConstraintViolationError) {
-        throw new RequestError({ code: 'entity.duplicate_value_of_unique_field', field: 'name' });
-      }
-
-      throw error;
-    }
-  }
-}
+import { errorHandler } from './utils.js';
 
 export default function organizationRoleRoutes<T extends AuthedRouter>(
   ...[
@@ -46,8 +21,11 @@ export default function organizationRoleRoutes<T extends AuthedRouter>(
     },
   ]: RouterInitArgs<T>
 ) {
-  const actions = new OrganizationRoleActions(roles);
-  const router = new SchemaRouter(OrganizationRoles, actions, { disabled: { post: true } });
+  const actions = new SchemaActions(roles);
+  const router = new SchemaRouter(OrganizationRoles, actions, {
+    disabled: { post: true },
+    errorHandler,
+  });
 
   /** Allows to carry an initial set of scopes for creating a new organization role. */
   type CreateOrganizationRolePayload = Omit<CreateOrganizationRole, 'id'> & {
diff --git a/packages/core/src/routes/organization/scopes.test.ts b/packages/core/src/routes/organization/scopes.test.ts
deleted file mode 100644
index 2ca780457..000000000
--- a/packages/core/src/routes/organization/scopes.test.ts
+++ /dev/null
@@ -1,20 +0,0 @@
-import { UniqueIntegrityConstraintViolationError } from 'slonik';
-
-import RequestError from '#src/errors/RequestError/index.js';
-
-import { OrganizationScopeActions } from './scopes.js';
-
-describe('OrganizationScopeActions', () => {
-  it('should throw RequestError if UniqueIntegrityConstraintViolationError is thrown inside', async () => {
-    // @ts-expect-error for testing
-    const actions = new OrganizationScopeActions({
-      insert: async () => {
-        throw new UniqueIntegrityConstraintViolationError(new Error('test'), 'unique');
-      },
-    });
-
-    await expect(actions.post({ name: 'test' })).rejects.toThrowError(
-      new RequestError({ code: 'entity.duplicate_value_of_unique_field', field: 'name' })
-    );
-  });
-});
diff --git a/packages/core/src/routes/organization/scopes.ts b/packages/core/src/routes/organization/scopes.ts
index f9406fee2..7c5a81bcb 100644
--- a/packages/core/src/routes/organization/scopes.ts
+++ b/packages/core/src/routes/organization/scopes.ts
@@ -1,35 +1,10 @@
-import {
-  type CreateOrganizationScope,
-  type OrganizationScope,
-  type OrganizationScopeKeys,
-  OrganizationScopes,
-} from '@logto/schemas';
-import { UniqueIntegrityConstraintViolationError } from 'slonik';
+import { OrganizationScopes } from '@logto/schemas';
 
-import RequestError from '#src/errors/RequestError/index.js';
 import SchemaRouter, { SchemaActions } from '#src/utils/SchemaRouter.js';
 
 import { type AuthedRouter, type RouterInitArgs } from '../types.js';
 
-export class OrganizationScopeActions extends SchemaActions<
-  OrganizationScopeKeys,
-  CreateOrganizationScope,
-  OrganizationScope
-> {
-  override async post(
-    data: Omit<CreateOrganizationScope, 'id'>
-  ): Promise<Readonly<OrganizationScope>> {
-    try {
-      return await super.post(data);
-    } catch (error: unknown) {
-      if (error instanceof UniqueIntegrityConstraintViolationError) {
-        throw new RequestError({ code: 'entity.duplicate_value_of_unique_field', field: 'name' });
-      }
-
-      throw error;
-    }
-  }
-}
+import { errorHandler } from './utils.js';
 
 export default function organizationScopeRoutes<T extends AuthedRouter>(
   ...[
@@ -41,7 +16,7 @@ export default function organizationScopeRoutes<T extends AuthedRouter>(
     },
   ]: RouterInitArgs<T>
 ) {
-  const router = new SchemaRouter(OrganizationScopes, new OrganizationScopeActions(scopes));
+  const router = new SchemaRouter(OrganizationScopes, new SchemaActions(scopes), { errorHandler });
 
   originalRouter.use(router.routes());
 }
diff --git a/packages/core/src/routes/organization/utils.ts b/packages/core/src/routes/organization/utils.ts
new file mode 100644
index 000000000..cc8d2c63c
--- /dev/null
+++ b/packages/core/src/routes/organization/utils.ts
@@ -0,0 +1,18 @@
+import {
+  ForeignKeyIntegrityConstraintViolationError,
+  UniqueIntegrityConstraintViolationError,
+} from 'slonik';
+
+import RequestError from '#src/errors/RequestError/index.js';
+
+export const errorHandler = (error: unknown) => {
+  if (error instanceof UniqueIntegrityConstraintViolationError) {
+    throw new RequestError({ code: 'entity.duplicate_value_of_unique_field', field: 'name' });
+  }
+
+  if (error instanceof ForeignKeyIntegrityConstraintViolationError) {
+    throw new RequestError({ code: 'entity.relation_foreign_key_not_found', status: 422 });
+  }
+
+  throw error;
+};
diff --git a/packages/core/src/utils/RelationQueries.ts b/packages/core/src/utils/RelationQueries.ts
index 28689fe5b..89a558f16 100644
--- a/packages/core/src/utils/RelationQueries.ts
+++ b/packages/core/src/utils/RelationQueries.ts
@@ -4,6 +4,8 @@ import { sql, type CommonQueryMethods } from 'slonik';
 import snakecaseKeys from 'snakecase-keys';
 import { type z } from 'zod';
 
+import { DeletionError } from '#src/errors/SlonikError/index.js';
+
 type AtLeast2<T extends unknown[]> = `${T['length']}` extends '0' | '1' ? never : T;
 
 type TableInfo<Table, TableSingular, Schema> = {
@@ -135,7 +137,7 @@ export default class RelationQueries<
    */
   async delete(data: CamelCaseIdObject<Schemas[number]['tableSingular']>) {
     const snakeCaseData = snakecaseKeys(data);
-    return this.pool.query(sql`
+    const { rowCount } = await this.pool.query(sql`
       delete from ${this.table}
       where ${sql.join(
         Object.entries(snakeCaseData).map(
@@ -144,6 +146,10 @@ export default class RelationQueries<
         sql` and `
       )};
     `);
+
+    if (rowCount < 1) {
+      throw new DeletionError(this.relationTable);
+    }
   }
 
   /**
diff --git a/packages/core/src/utils/SchemaRouter.ts b/packages/core/src/utils/SchemaRouter.ts
index 62896d52a..124a702fd 100644
--- a/packages/core/src/utils/SchemaRouter.ts
+++ b/packages/core/src/utils/SchemaRouter.ts
@@ -90,7 +90,7 @@ export class SchemaActions<
    * @param id The ID of the entity to be updated.
    * @param data The data of the entity to be updated.
    * @returns The updated entity.
-   * @throws An `RequestError` with 404 status code if the entity is not found.
+   * @throws An `UpdateError` if the entity is not found.
    */
   public async patchById(id: string, data: Partial<Schema>): Promise<Readonly<Schema>> {
     return this.queries.updateById(id, data);
@@ -100,7 +100,7 @@ export class SchemaActions<
    * The function for `DELETE /:id` route to delete an entity by ID.
    *
    * @param id The ID of the entity to be deleted.
-   * @throws An `RequestError` with 404 status code if the entity is not found.
+   * @throws An `DeletionError` if the entity is not found.
    */
   public async deleteById(id: string): Promise<void> {
     return this.queries.deleteById(id);
@@ -121,6 +121,7 @@ type SchemaRouterConfig = {
     /** Disable `DELETE /:id` route. */
     deleteById: boolean;
   };
+  errorHandler?: (error: unknown) => void;
 };
 
 /**
@@ -167,6 +168,17 @@ export default class SchemaRouter<
       config
     );
 
+    if (this.config.errorHandler) {
+      this.use(async (_, next) => {
+        try {
+          await next();
+        } catch (error: unknown) {
+          this.config.errorHandler?.(error);
+          throw error;
+        }
+      });
+    }
+
     const { disabled } = this.config;
 
     if (!disabled.get) {
@@ -324,7 +336,7 @@ export default class SchemaRouter<
       koaGuard({
         params: z.object({ id: z.string().min(1) }),
         body: z.object({ [columns.relationSchemaIds]: z.string().min(1).array().nonempty() }),
-        status: [201, 404, 422],
+        status: [201, 422],
       }),
       async (ctx, next) => {
         const {
@@ -344,7 +356,8 @@ export default class SchemaRouter<
       `/:id/${pathname}/:relationId`,
       koaGuard({
         params: z.object({ id: z.string().min(1), relationId: z.string().min(1) }),
-        status: [204, 422],
+        // Should be 422 if the relation doesn't exist, update until we change the error handling
+        status: [204, 404],
       }),
       async (ctx, next) => {
         const {
diff --git a/packages/integration-tests/src/tests/api/organization-role.test.ts b/packages/integration-tests/src/tests/api/organization-role.test.ts
index 0131887a0..ba93431e2 100644
--- a/packages/integration-tests/src/tests/api/organization-role.test.ts
+++ b/packages/integration-tests/src/tests/api/organization-role.test.ts
@@ -57,6 +57,23 @@ describe('organization role APIs', () => {
       await roleApi.delete(role.id);
     });
 
+    it('should fail to create a role with some scopes if the scopes do not exist', async () => {
+      const name = 'test' + randomId();
+      const organizationScopeIds = ['0'];
+      const response = await roleApi
+        .create({ name, organizationScopeIds })
+        .catch((error: unknown) => error);
+
+      assert(response instanceof HTTPError);
+
+      const { statusCode, body: raw } = response.response;
+      const body: unknown = JSON.parse(String(raw));
+      expect(statusCode).toBe(422);
+      expect(isKeyInObject(body, 'code') && body.code).toBe(
+        'entity.relation_foreign_key_not_found'
+      );
+    });
+
     it('should get organization roles successfully', async () => {
       const [name1, name2] = ['test' + randomId(), 'test' + randomId()];
       const createdRoles = await Promise.all([
@@ -165,6 +182,31 @@ describe('organization role APIs', () => {
       ]);
     });
 
+    it('should fail when try to add non-existent scopes to a role', async () => {
+      const [role, scope1, scope2] = await Promise.all([
+        roleApi.create({ name: 'test' + randomId() }),
+        scopeApi.create({ name: 'test' + randomId() }),
+        scopeApi.create({ name: 'test' + randomId() }),
+      ]);
+      const response = await roleApi
+        .addScopes(role.id, [scope1.id, scope2.id, '0'])
+        .catch((error: unknown) => error);
+
+      assert(response instanceof HTTPError);
+      expect(response.response.statusCode).toBe(422);
+      expect(JSON.parse(String(response.response.body))).toMatchObject(
+        expect.objectContaining({
+          code: 'entity.relation_foreign_key_not_found',
+        })
+      );
+
+      await Promise.all([
+        roleApi.delete(role.id),
+        scopeApi.delete(scope1.id),
+        scopeApi.delete(scope2.id),
+      ]);
+    });
+
     it('should be able to remove scopes from a role', async () => {
       const [role, scope1, scope2] = await Promise.all([
         roleApi.create({ name: 'test' + randomId() }),
@@ -192,5 +234,16 @@ describe('organization role APIs', () => {
         scopeApi.delete(scope2.id),
       ]);
     });
+
+    it('should fail when try to remove non-existent scopes from a role', async () => {
+      const [role] = await Promise.all([roleApi.create({ name: 'test' + randomId() })]);
+
+      const response = await roleApi.deleteScope(role.id, '0').catch((error: unknown) => error);
+
+      assert(response instanceof HTTPError);
+      expect(response.response.statusCode).toBe(404);
+
+      await Promise.all([roleApi.delete(role.id)]);
+    });
   });
 });
diff --git a/packages/integration-tests/src/tests/api/organization.test.ts b/packages/integration-tests/src/tests/api/organization.test.ts
index 231f111be..adcfedd1e 100644
--- a/packages/integration-tests/src/tests/api/organization.test.ts
+++ b/packages/integration-tests/src/tests/api/organization.test.ts
@@ -115,6 +115,24 @@ describe('organization APIs', () => {
       ]);
     });
 
+    it('should fail when try to add empty user list', async () => {
+      const organization = await organizationApi.create({ name: 'test' });
+      const response = await organizationApi
+        .addUsers(organization.id, [])
+        .catch((error: unknown) => error);
+      expect(response instanceof HTTPError && response.response.statusCode).toBe(400);
+      await organizationApi.delete(organization.id);
+    });
+
+    it('should fail when try to add user to an organization that does not exist', async () => {
+      const response = await organizationApi.addUsers('0', ['0']).catch((error: unknown) => error);
+      assert(response instanceof HTTPError);
+      expect(response.response.statusCode).toBe(422);
+      expect(JSON.parse(String(response.response.body))).toMatchObject(
+        expect.objectContaining({ code: 'entity.relation_foreign_key_not_found' })
+      );
+    });
+
     it('should be able to delete organization user', async () => {
       const organization = await organizationApi.create({ name: 'test' });
       const user = await createUser({ username: 'test' + randomId() });
@@ -125,6 +143,12 @@ describe('organization APIs', () => {
       expect(users).not.toContainEqual(user);
       await Promise.all([organizationApi.delete(organization.id), deleteUser(user.id)]);
     });
+
+    it('should fail when try to delete user from an organization that does not exist', async () => {
+      const response = await organizationApi.deleteUser('0', '0').catch((error: unknown) => error);
+      assert(response instanceof HTTPError);
+      expect(response.response.statusCode).toBe(404);
+    });
   });
 
   describe('organization - user - organization role relation routes', () => {
diff --git a/packages/phrases/src/locales/de/errors/entity.ts b/packages/phrases/src/locales/de/errors/entity.ts
index 6c976a91c..06f870bab 100644
--- a/packages/phrases/src/locales/de/errors/entity.ts
+++ b/packages/phrases/src/locales/de/errors/entity.ts
@@ -6,6 +6,9 @@ const entity = {
   not_exists_with_id: '{{name}} mit ID `{{id}}` existiert nicht.',
   not_found: 'Die Ressource wurde nicht gefunden.',
   /** UNTRANSLATED */
+  relation_foreign_key_not_found:
+    'Cannot find one or more foreign keys. Please check the input and ensure that all referenced entities exist.',
+  /** UNTRANSLATED */
   duplicate_value_of_unique_field: 'The value of the unique field `{{field}}` is duplicated.',
 };
 
diff --git a/packages/phrases/src/locales/en/errors/entity.ts b/packages/phrases/src/locales/en/errors/entity.ts
index 25bd3b6cf..8a048a79c 100644
--- a/packages/phrases/src/locales/en/errors/entity.ts
+++ b/packages/phrases/src/locales/en/errors/entity.ts
@@ -5,6 +5,8 @@ const entity = {
   not_exists: 'The {{name}} does not exist.',
   not_exists_with_id: 'The {{name}} with ID `{{id}}` does not exist.',
   not_found: 'The resource does not exist.',
+  relation_foreign_key_not_found:
+    'Cannot find one or more foreign keys. Please check the input and ensure that all referenced entities exist.',
   duplicate_value_of_unique_field: 'The value of the unique field `{{field}}` is duplicated.',
 };
 
diff --git a/packages/phrases/src/locales/es/errors/entity.ts b/packages/phrases/src/locales/es/errors/entity.ts
index 80432fccc..6df341e26 100644
--- a/packages/phrases/src/locales/es/errors/entity.ts
+++ b/packages/phrases/src/locales/es/errors/entity.ts
@@ -6,6 +6,9 @@ const entity = {
   not_exists_with_id: 'El {{name}} con ID `{{id}}` no existe.',
   not_found: 'El recurso no existe.',
   /** UNTRANSLATED */
+  relation_foreign_key_not_found:
+    'Cannot find one or more foreign keys. Please check the input and ensure that all referenced entities exist.',
+  /** UNTRANSLATED */
   duplicate_value_of_unique_field: 'The value of the unique field `{{field}}` is duplicated.',
 };
 
diff --git a/packages/phrases/src/locales/fr/errors/entity.ts b/packages/phrases/src/locales/fr/errors/entity.ts
index 58f4bb2cf..cb2d23415 100644
--- a/packages/phrases/src/locales/fr/errors/entity.ts
+++ b/packages/phrases/src/locales/fr/errors/entity.ts
@@ -6,6 +6,9 @@ const entity = {
   not_exists_with_id: "Le {{name}} avec l'ID `{{id}}` n'existe pas.",
   not_found: "La ressource n'existe pas.",
   /** UNTRANSLATED */
+  relation_foreign_key_not_found:
+    'Cannot find one or more foreign keys. Please check the input and ensure that all referenced entities exist.',
+  /** UNTRANSLATED */
   duplicate_value_of_unique_field: 'The value of the unique field `{{field}}` is duplicated.',
 };
 
diff --git a/packages/phrases/src/locales/it/errors/entity.ts b/packages/phrases/src/locales/it/errors/entity.ts
index c5a988479..e44d2f4c3 100644
--- a/packages/phrases/src/locales/it/errors/entity.ts
+++ b/packages/phrases/src/locales/it/errors/entity.ts
@@ -6,6 +6,9 @@ const entity = {
   not_exists_with_id: '{{name}} con ID `{{id}}` non esiste.',
   not_found: 'La risorsa non esiste.',
   /** UNTRANSLATED */
+  relation_foreign_key_not_found:
+    'Cannot find one or more foreign keys. Please check the input and ensure that all referenced entities exist.',
+  /** UNTRANSLATED */
   duplicate_value_of_unique_field: 'The value of the unique field `{{field}}` is duplicated.',
 };
 
diff --git a/packages/phrases/src/locales/ja/errors/entity.ts b/packages/phrases/src/locales/ja/errors/entity.ts
index 3a0094d11..e3a56a3d2 100644
--- a/packages/phrases/src/locales/ja/errors/entity.ts
+++ b/packages/phrases/src/locales/ja/errors/entity.ts
@@ -6,6 +6,9 @@ const entity = {
   not_exists_with_id: 'IDが`{{id}}`の{{name}}は存在しません。',
   not_found: 'リソースが存在しません。',
   /** UNTRANSLATED */
+  relation_foreign_key_not_found:
+    'Cannot find one or more foreign keys. Please check the input and ensure that all referenced entities exist.',
+  /** UNTRANSLATED */
   duplicate_value_of_unique_field: 'The value of the unique field `{{field}}` is duplicated.',
 };
 
diff --git a/packages/phrases/src/locales/ko/errors/entity.ts b/packages/phrases/src/locales/ko/errors/entity.ts
index 5f3abba7d..ad347b2c2 100644
--- a/packages/phrases/src/locales/ko/errors/entity.ts
+++ b/packages/phrases/src/locales/ko/errors/entity.ts
@@ -6,6 +6,9 @@ const entity = {
   not_exists_with_id: '{{id}} ID를 가진 {{name}}는 존재하지 않아요.',
   not_found: '리소스가 존재하지 않아요.',
   /** UNTRANSLATED */
+  relation_foreign_key_not_found:
+    'Cannot find one or more foreign keys. Please check the input and ensure that all referenced entities exist.',
+  /** UNTRANSLATED */
   duplicate_value_of_unique_field: 'The value of the unique field `{{field}}` is duplicated.',
 };
 
diff --git a/packages/phrases/src/locales/pl-pl/errors/entity.ts b/packages/phrases/src/locales/pl-pl/errors/entity.ts
index 7cfbab2f9..c35c09e23 100644
--- a/packages/phrases/src/locales/pl-pl/errors/entity.ts
+++ b/packages/phrases/src/locales/pl-pl/errors/entity.ts
@@ -6,6 +6,9 @@ const entity = {
   not_exists_with_id: '{{name}} o identyfikatorze `{{id}}` nie istnieje.',
   not_found: 'Zasób nie istnieje.',
   /** UNTRANSLATED */
+  relation_foreign_key_not_found:
+    'Cannot find one or more foreign keys. Please check the input and ensure that all referenced entities exist.',
+  /** UNTRANSLATED */
   duplicate_value_of_unique_field: 'The value of the unique field `{{field}}` is duplicated.',
 };
 
diff --git a/packages/phrases/src/locales/pt-br/errors/entity.ts b/packages/phrases/src/locales/pt-br/errors/entity.ts
index 1a7ad53cc..a036da459 100644
--- a/packages/phrases/src/locales/pt-br/errors/entity.ts
+++ b/packages/phrases/src/locales/pt-br/errors/entity.ts
@@ -6,6 +6,9 @@ const entity = {
   not_exists_with_id: 'O {{name}} com ID `{{id}}` não existe.',
   not_found: 'O recurso não existe.',
   /** UNTRANSLATED */
+  relation_foreign_key_not_found:
+    'Cannot find one or more foreign keys. Please check the input and ensure that all referenced entities exist.',
+  /** UNTRANSLATED */
   duplicate_value_of_unique_field: 'The value of the unique field `{{field}}` is duplicated.',
 };
 
diff --git a/packages/phrases/src/locales/pt-pt/errors/entity.ts b/packages/phrases/src/locales/pt-pt/errors/entity.ts
index 9652b4abe..2ebab9687 100644
--- a/packages/phrases/src/locales/pt-pt/errors/entity.ts
+++ b/packages/phrases/src/locales/pt-pt/errors/entity.ts
@@ -6,6 +6,9 @@ const entity = {
   not_exists_with_id: '{{name}} com o ID `{{id}}` não existe.',
   not_found: 'O recurso não existe.',
   /** UNTRANSLATED */
+  relation_foreign_key_not_found:
+    'Cannot find one or more foreign keys. Please check the input and ensure that all referenced entities exist.',
+  /** UNTRANSLATED */
   duplicate_value_of_unique_field: 'The value of the unique field `{{field}}` is duplicated.',
 };
 
diff --git a/packages/phrases/src/locales/ru/errors/entity.ts b/packages/phrases/src/locales/ru/errors/entity.ts
index 5b59de227..9b90b8e51 100644
--- a/packages/phrases/src/locales/ru/errors/entity.ts
+++ b/packages/phrases/src/locales/ru/errors/entity.ts
@@ -6,6 +6,9 @@ const entity = {
   not_exists_with_id: '{{name}} с ID `{{id}}` не существует.',
   not_found: 'Ресурс не существует.',
   /** UNTRANSLATED */
+  relation_foreign_key_not_found:
+    'Cannot find one or more foreign keys. Please check the input and ensure that all referenced entities exist.',
+  /** UNTRANSLATED */
   duplicate_value_of_unique_field: 'The value of the unique field `{{field}}` is duplicated.',
 };
 
diff --git a/packages/phrases/src/locales/tr-tr/errors/entity.ts b/packages/phrases/src/locales/tr-tr/errors/entity.ts
index dc2d6e968..e19c0c2e8 100644
--- a/packages/phrases/src/locales/tr-tr/errors/entity.ts
+++ b/packages/phrases/src/locales/tr-tr/errors/entity.ts
@@ -6,6 +6,9 @@ const entity = {
   not_exists_with_id: ' `{{id}}` id kimliğine sahip {{name}} mevcut değil.',
   not_found: 'Kaynak mevcut değil.',
   /** UNTRANSLATED */
+  relation_foreign_key_not_found:
+    'Cannot find one or more foreign keys. Please check the input and ensure that all referenced entities exist.',
+  /** UNTRANSLATED */
   duplicate_value_of_unique_field: 'The value of the unique field `{{field}}` is duplicated.',
 };
 
diff --git a/packages/phrases/src/locales/zh-cn/errors/entity.ts b/packages/phrases/src/locales/zh-cn/errors/entity.ts
index d4ed8a178..4f6f365bf 100644
--- a/packages/phrases/src/locales/zh-cn/errors/entity.ts
+++ b/packages/phrases/src/locales/zh-cn/errors/entity.ts
@@ -6,6 +6,9 @@ const entity = {
   not_exists_with_id: 'ID 为 `{{id}}` 的 {{name}} 不存在。',
   not_found: '该资源不存在。',
   /** UNTRANSLATED */
+  relation_foreign_key_not_found:
+    'Cannot find one or more foreign keys. Please check the input and ensure that all referenced entities exist.',
+  /** UNTRANSLATED */
   duplicate_value_of_unique_field: 'The value of the unique field `{{field}}` is duplicated.',
 };
 
diff --git a/packages/phrases/src/locales/zh-hk/errors/entity.ts b/packages/phrases/src/locales/zh-hk/errors/entity.ts
index be338f09f..c1d23cf45 100644
--- a/packages/phrases/src/locales/zh-hk/errors/entity.ts
+++ b/packages/phrases/src/locales/zh-hk/errors/entity.ts
@@ -6,6 +6,9 @@ const entity = {
   not_exists_with_id: 'ID 為 `{{id}}` 的 {{name}} 不存在。',
   not_found: '該資源不存在。',
   /** UNTRANSLATED */
+  relation_foreign_key_not_found:
+    'Cannot find one or more foreign keys. Please check the input and ensure that all referenced entities exist.',
+  /** UNTRANSLATED */
   duplicate_value_of_unique_field: 'The value of the unique field `{{field}}` is duplicated.',
 };
 
diff --git a/packages/phrases/src/locales/zh-tw/errors/entity.ts b/packages/phrases/src/locales/zh-tw/errors/entity.ts
index 0bed3b82b..e12c5d258 100644
--- a/packages/phrases/src/locales/zh-tw/errors/entity.ts
+++ b/packages/phrases/src/locales/zh-tw/errors/entity.ts
@@ -6,6 +6,9 @@ const entity = {
   not_exists_with_id: 'ID 為 `{{id}}` 的 {{name}} 不存在。',
   not_found: '資源不存在。',
   /** UNTRANSLATED */
+  relation_foreign_key_not_found:
+    'Cannot find one or more foreign keys. Please check the input and ensure that all referenced entities exist.',
+  /** UNTRANSLATED */
   duplicate_value_of_unique_field: 'The value of the unique field `{{field}}` is duplicated.',
 };