FIRST_MESSAGE_LINK_NOT_ALLOWED

{
  "status": "error",
  "error": {
    "code": "FIRST_MESSAGE_LINK_NOT_ALLOWED",
    "message": "Links not allowed in a first message",
    "type": "validation",
    "http_status": 400,
    "retryable": false,
    "doc_url": "https://docs.blujay.io/errors/first-message-link-not-allowed",
    "details": []
  },
  "trace_id": "trc_8f2a1c0e4b7d",
  "timestamp": "2026-10-14T17:30:48.000Z"
}