API: Return 400 for all validation erros in the mebers API
Return 400 for all validation errors in the members API instead of 422 for wrong access level.
Related issues
Closes #28702 (closed)
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Return 400 for all validation errors in the members API instead of 422 for wrong access level.
Closes #28702 (closed)