Rate Limit: 1200 requests per 60 seconds

Cancel an open order. This endpoint is asynchronous — a successful response means the cancel request was accepted, not that the order has been cancelled. Monitor the final result via WebSocket (Orders channel) or by polling Query Order.

Request body: Request parameters must be sent as a JSON body, not as query string parameters.

Request

Either orderId or clientOrderId must be sent. If both orderId and clientOrderId are provided, orderId takes precedence. Note that you can only cancel orders in the NEW/OPEN/PARTIALLY_FILLED status, otherwise even if the api request is successful, it does not mean that the order has been cancelled.

Response

Example Request

{
  "orderId": "2106591138643265"
}

Example Response

{
  "code": 200000,
  "message": "Success",
  "data": {
    "orderId": "1234567890123456",
    "clientOrderId": "my-order-001",
    "orderState": "OPEN",
    "action": "CANCEL_PENDING",
    "actionMsg": ""
  }
}