Set the callback address

Merchant console application list page address: https://console.paynicorn.com/#/app/list

Merchant Console > Apps > Apps

Find the corresponding application, click Modify, and configure the callback address. This address is used to notify the server of the success and failure status of the order in the background. After receiving the background notification, the merchant server needs to verify whether the signature of the callback is legal. After the signature verification is passed, You need to call the Query Transaction Result API to get the status of the order.