diff --git a/src/datasources/db/providerAPI.ts b/src/datasources/db/providerAPI.ts
index d43541e..dacece9 100644
--- a/src/datasources/db/providerAPI.ts
+++ b/src/datasources/db/providerAPI.ts
@@ -127,7 +127,7 @@ export class ProviderAPI extends DataSource {
                 .execute();
             await entityManager.getRepository(Provider)
                 .createQueryBuilder('provider')
-                .relation(Provider, 'cargoBikes')
+                .relation(Provider, 'cargoBikeIds')
                 .of(inserts.identifiers[0].id)
                 .add(provider.cargoBikeIds);
         });
diff --git a/src/schema/type-defs.ts b/src/schema/type-defs.ts
index ef743d4..768b457 100644
--- a/src/schema/type-defs.ts
+++ b/src/schema/type-defs.ts
@@ -737,7 +737,7 @@ export default gql`
 
     "(dt. Anbieter)"
     input ProviderCreateInput {
-        formName: String!
+        formName: String
         privatePersonId: ID
         organisationId: ID
         cargoBikeIds: [ID!]