After a user makes a payment, you can return the payment result to Alipay+ in the following three ways:

• Return the payment result in the response of the pay API.
• Return the payment result in the asynchronous request of the notifyPayment API.
• Return the payment result in the response of the inquiryPayment API.

If the payment reaches a final status (success or failure), ensure the returned payment results of the preceding three ways are consistent.

Note: Returning payment results by the inquiryPayment API and the notifyPayment API is optional.

Integration requirements

It is recommended that the MPP support the following：

• Support the inquiryPayment API to ensure that Alipay+ receives the final payment result (success or failure). For how to respond to a payment result inquiry through the inquiryPayment API, see Respond to payment inquiry.
• Support the notifyPayment API so that Alipay+ can receive your payment result notification. Learn more about how to notify of the payment result through the notifyPayment API.