Apply for the following parameters and configure them as required before access.

1. Apply for APPID

The product system of WeChat Pay is established based on the social system of WeChat. A WeChat social carrier is thus a must for any direct-connected merchant or institution for using WeChat Cross-Border Pay. The ID corresponding to the carrier is the APPID.

For a direct-connected merchant, the social carrier can be an Official Account （see"What is Official Account"），a Mini Program（see"What is Mini Program"）, or an app.

To apply for an Official Account, visit the link below: Official Account Application Guide

To apply for a Mini Program, visit the link below: Mini Program Application Guide

If a merchant already has its own app and wishes to connect the app with WeChat Pay, visit the link below to register the app: APP Registering Guide

Apply for the appropriate social carrier as needed. For details on selecting a social carrier, see section 1.4.

Upon successful application for a social carrier, the account information can be queried from the corresponding platform to obtain the APPID.

2. Apply for mch_id

The mch_id is the recipient account number. The operation of applying for mch_id is independent from that of the APPID, so both might be performed concurrently. Visit the link below to apply for mch_id: Merchanat ID Application Guide

After the mch_id has been applied for, the institution will receive a notification email specifying the applied mch_id, login user name, and password to be kept safely.

Note: Each mch_id corresponds to only one settlement currency. To use multiple currencies for settlement, apply for multiple mch_id to match the currencies.

3. Link APPID with mch_id

After applying for both parameters, link APPID with mch_id.

Log in to the WeChat Pay Merchants Platform and select Dev Configuration on the top tab to enter the linking page. If the linking failed, contact the corresponding BD or assistant for help.

In the direct mode, an APPID can be linked with more than one mch_id, while a mch_id can also be linked to more than one APPID.

Complete