A 400 response indicates a bad request.

{
  "code": "bad.request",
  "title": "Bad Request",
  "incidentId": "5fb5aaea-390e-46f3-bf93-dffe8cda5a61",
  "details": [
    {
      "code": "invalid.data",
      "message": "Invalid data, Cp code data[Name/Id] not present"
    }
  ]
}