LAST_PHONE_NUMBER_IN_GROUP

{
  "status": "error",
  "error": {
    "code": "LAST_PHONE_NUMBER_IN_GROUP",
    "message": "Last phone number in the group",
    "type": "validation",
    "http_status": 409,
    "retryable": false,
    "doc_url": "https://docs.blujay.io/errors/last-phone-number-in-group",
    "details": []
  },
  "trace_id": "trc_8f2a1c0e4b7d",
  "timestamp": "2026-10-14T17:30:48.000Z"
}