<p>Cancels a handshake. Canceling a handshake sets the handshake state to <code>CANCELED</code>.</p> <p>This operation can be called only from the account that originated the handshake. The recipient of the handshake can't cancel it, but can use <a>DeclineHandshake</a> instead. After a handshake is canceled, the recipient can no longer respond to that handshake.</p> <p>After you cancel a handshake, it continues to appear in the results of relevant APIs for only 30 days. After that, it's deleted.</p>

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

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