| PUBLIC API |
Mini Program Signing |
The merchant backend obtains a signing session ID by requesting this interface, and then calls the signing page of the mini program for Auto-debit through the mini program signing interface. |
| H5 Signing |
The merchant backend obtains a signing url by requesting this interface, and then requests the signing url on the h5 page to redirect to WeChat to complete signing. |
| JSAPI Signing |
The merchant backend obtains a signing url by requesting this interface, and then requests the signing url on the h5 page open inside of WeChat. |
| PC WEB Signing |
The merchant backend obtains a signing url by requesting this interface, then generate a QR code based on the signing url and display it on PC Websites for consumers to scan. Consumers could scan the QR code either through WeChat or third party APPs or browsers. |
| APP Signing |
The merchant backend obtains a signing session ID by requesting this interface, and then calls the signing SDK to redirect to WeChat signing page. |
| Querying Signing Status (By contract_id) |
The signing relationship query interface provides the single transaction signing relationship query. |
| Querying Signing Status (By out_contract_code) |
The signing relationship query interface provides the single transaction signing relationship query. |
| Applying for Termination |
When the signing relationship between the merchant and the user is wrong or the merchant actively requests terminating the contract previously signed with the user, this interface can be called to terminate the contract. At present, the Auto-debit contract ID can be used to complete the termination at the merchant side. Moreover, the user can initiate termination through a WeChat client. The termination result will be sent to the merchant side based on Termination Callback Address. |
| Signing and Termination Result Callback |
After successful signing and termination (no notice if unsuccessful), wechat will asynchronously notify merchants of relevant signing and termination information. |
| Deduction |
The deduction request implements deduction according to the priority payment method recorded in the signed contract. If the deduction fails, the other payment methods of the user will be polled in turn. |
| Deduction Result Notification |
After the deduction is completed, wechat will send the relevant payment results and user information to the merchant in the form of data flow. |
| Order Query |
The interface provides the query function of all WeChat Pay orders. Merchants can actively query the order status through the order query interface to complete the business logic of next step. |
| Order Reversing |
The order reversing interface needs to be called in the following circumstances: If payment for the merchant’s order fails and a new order ID needs to be generated to initiate payment again, the order closing interface needs to be called for the original order No. to avoid repeated payment; after an order is placed in the system, the user's payment times out and the system will exit without accepting the order, the order closing interface needs to be called to prevent the user from continuing operation. |
| Refund Notification |
When a refund is needed due to the buyer or seller within a period after the transaction, the seller can return the payment to the buyer through the Refund API. WeChat Pay will return the payment to the buyer's account in accordance with the refund rules after receiving the refund request and completing the verification. |
| Query Single Refund |
After submitting a refund request, check the refund status by calling this API. There may be a delay in refund. The refund paid by balance will be received within 20 minutes. For refunds paid by bank cards, check the refund status after 3 business days. |
| Query All Refunds |
After submitting a refund request, check the refund status by calling this API. There may be a delay in refund. The refund paid by balance will be received within 20 minutes. For refunds paid by bank cards, check the refund status after 3 business days. |
