MessageResponse

A message in a conversation. Either body or attachments (or both) must be provided. A message cannot be empty - it must contain either text content or at least one attachment.

errorobject or null(ProblemDetails)

The error returned by the API. This is an RFC 7807 problem details object: https://www.rfc-editor.org/rfc/rfc7807.html.

{
  "data": {
    "id": "msg_001",
    "conversation_id": "conv_456",
    "message_type": "comment",
    "body": "string",
    "author": { … },
    "visibility": "public",
    "created_at": "2025-10-27T14:35:00.000Z",
    "attachments": [ … ]
  },
  "error": {
    "type": "string",
    "title": "string",
    "status": 0,
    "detail": "string",
    "instance": "string"
  }
}