Callback Notification

After the payment is completed, PayerMax will send the payment result to the merchant in the form of a data stream. The merchant needs to receive and process it and return the response according to the document specification.

1. Notification Specifications

(1) The same notification may be sent to the merchant system repeatedly. The merchant system must be able to handle duplicate notifications correctly.
(2) When the merchant receives the PayerMax result notification, it needs to respond correctly. If the response is incorrect, PayerMax will determine that the notification failed and resend the notification until it succeeds (in the case of unsuccessful notification, PayerMax will initiate multiple notifications, ), but PayerMax cannot guarantee that these notifications will eventually succeed. (3).When the order status is unknown or the PayerMax payment result notification has not been received, it is recommended that the merchant goes to PayerMax【Transaction Inquiry】to confirm the order status.

Notice:
(1) The merchant system needs to verify the content of the payment result notification by signature, and checks whether the returned order amount is consistent with the merchant’s order amount, so as to prevent data leakage from causing “false notification” and financial losses.
(2) When receiving a notification for processing, merchants are suggested to check the status of the corresponding order. Keep processing if it has not been processed, or return a successful result directly if it has been processed
(3) If the merchant server has limited access to external IP address, please whitelist the following IP. Environment IP.For prod and test environment ip addresses,please contact PayerMax technical support.

Note:

Payermax servers are overseas.

2. API Parameters

For details, please refer: API