With over a billion users, WeChat is the most popular instant messaging app in China. Users who have provided bank account information may use the app to pay bills, order goods and services, transfer money to other users, and pay in participating stores. When the customer selects WeChat Pay to process a payment on your checkout, the WeChat app will open on the customer’s device. The customer checks the recipient of the funds and the amount displayed, then selects to pay either with a bank card, or using their WeChat balance. The customer enters their password to complete the payment. A confirmation is displayed following a successful transaction, before the customer’s device is redirected back to your website. Once completed, you will receive confirmation via a URL notification.
| Supported customer countries | CN |
| Supported currencies | EUR, USD |
| Refunds |
Full and partial refunds permitted for up to 90 days. |
| Chargebacks |
Payments are not subject to chargebacks. |
| Zero-authorisation |
Not supported. |
| Recurring payments |
Not supported. |
Configuration
- To enable this payment method on your account, please get in touch with your account manager.
A test sandbox account will be provided, which you will need when testing your implementation. - Modify your POST to Payment Pages as needed:
Field name Required during payment session
(Either included in POST by merchant or entered by customer on Payment Pages)
Required in POST Description billingcountryiso2a Yes No The country entered for the billing address, using ISO2A format. billingfirstname Yes No The billing first name. billinglastname Yes No The billing last name. ruleidentifier No No If your POST to the Payment Pages already includes all fields required by the payment method, you can streamline the checkout process for the customer by also submitting ruleidentifier=STR-14.
This allows the customer’s browser to immediately go to the pages hosted by the payment method to complete the transaction. (We refer to this as Journey C)
Notifications
Once a payment has been authorised, funds will be settled at a later time, as determined by WeChat Pay.
The settlement notification may not be sent immediately after processing the payment.
In the unlikely event that payment is still pending settlement after 7 days (settlestatus “10”), this will be scheduled for investigation and we will contact you with further information.
Before you begin testing, we recommend that you contact our Support Team and request that rules are enabled on your account, which submit URL notifications to your system in the following scenarios:
- When a payment is authorised.
- When funds have been settled.
Configuring the authorisation notification
We recommend including at least the following fields in your authorisation notification:
- Acquirer Response Message (acquirerresponsemessage)
- Base Amount (baseamount) (e.g. £10.50 is “1050”)*
- Main Amount (mainamount) (e.g. £10.50 is “10.50”)*
- Billing Country (billingcountryiso2a)
- Currency (currencyiso3a)
- Error Code (errorcode)
- Live Status (livestatus)
- Order Reference (orderreference)
- Payment Type (paymenttypedescription)
- Request Type (requesttypedescription)
- Settle Status (settlestatus)
- Site Reference (sitereference)
- Transaction Reference (transactionreference)
- Transaction Started Timestamp (transactionstartedtimestamp)
*Please choose your preferred format.
Configuring the settlement notification
We recommend including the following fields in your settlement notification:
- Settle Status (settlestatus)
- Site Reference (sitereference)
- Transaction Reference (transactionreference)
Check the notification
You will need to check the contents of each notification received and respond accordingly by following the processes outlined in our URL notifications documentation. In particular, you will need to look at the updated settlestatus value:
- On authorisation: If the settlestatus is “0”, “1” or “10”, the payment has been authorised and you are not required to take further action at this time. However, values of “2” or “3” indicate funds are not scheduled for settlement (suspended and cancelled, respectively).
- On settlement: If the settlestatus has been updated to “100”, this indicates that the funds have been settled. Alternatively, if this has been updated to “3”, this indicates there has been a problem and the payment was subsequently cancelled.
Cancelled transactions (settlestatus “3”) may be settled at a later time. In situations where the customer has completed the steps required to fulfil the payment, the settlestatus is updated to “100” to indicate the funds have been transferred to your account.
If you have contacted the Support Team to configure settlement notifications (as described above), you will be notified when this occurs.
Testing
You will need to test your solution before you can begin processing live payments. Test transactions are processed through your test Site Reference.
Requirements
You will need to contact our Support Team, providing your WeChat Pay test account details. We will then configure your test site reference to connect directly to the WeChat Pay testing environment.
When performing test transactions, your browser will be redirected to the WeChat Pay testing environment to simulate a payment. Other than this, the process will be exactly the same as processing live payments.
Refunds
After processing a payment, it is possible to refund the customer using Portal.
Refunds for WeChat Pay are settled immediately (settlestatus “100”).
Requirements
- You cannot refund a payment until the AUTH has been settled (settlestatus is “100”).
- You cannot refund a greater amount than was originally settled.
