If the backend is configured to allow cancellation of unshipped orders, the money paid by the user will be automatically refunded.
```javascript
WXAPI.orderCloseV2({
token: '0000',
orderId: 123,
remark: 'Reason for closing'
})
```
+ token current user login credentials
+ orderId order id
+ remark reason for closure
```json
{
code: 0,
msg: 'success'
}
```