取消订单回调通知
# 取消订单回调通知
联系对接人员配置host和path
### 回调地址
| HTTP Method | Path |
| :---------- | :----------- |
| POST | /{path} |
### 回调通知内容
| 参数名称 | 类型 | 描述 |
| :- | :-| :- |
| tradeNo | string | 交易单号 |
| isSuccess | bool | 是否取消成功|
| failureReason | string | 取消失败的原因 |
### 回调通知示例
``` http
POST http://{host}/{path} HTTP/1.1
timestamp: 2020-11-27T11:16:30Z
signature: 5cb8c7c6dfd77ee1232d566c8ccab00c6f6285dd
Transfer-Encoding: chunked
Content-Type: application/json; charset=utf-8
{
"tradeNo": "T201125160706155",
"isSuccess": false,
"failureReason": "退款政策不支持"
}
```