This call cancels a registration in a scheduled training for a specific registrant. If the registrant has paid for the training, a cancellation cannot be completed with this method; it must be completed on the external admin site. No notification is sent to the registrant or the organizer by default. The registrant can re-register if needed.

{
  "success": true,
  "data": {
    "id": "abc123",
    "created_at": "2025-01-01T00:00:00Z"
  }
}

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "Invalid request parameters"
  }
}

This call cancels a registration in a scheduled training for a specific registrant. If the registrant has paid for the training, a cancellation cannot be completed with this method; it must be completed on the external admin site. No notification is sent to the registrant or the organizer by default. The registrant can re-register if needed.

{
  "success": true,
  "data": {
    "id": "abc123",
    "created_at": "2025-01-01T00:00:00Z"
  }
}

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "Invalid request parameters"
  }
}