# How to call the interface on behalf of the merchant

• After completing the third-party platform account creation, the third-party platform back-end service construction, building authorization links and guiding the merchant to complete the authorization, the service provider can obtain the authority to call on behalf of the merchant. Official Account message template Or the interface of the Mini Program.

# Call Connection Logic Dxplaination

1, simple can be understood as the Official Account message template and Mini Program api, service providers can call, but when the service providers call to useauthorizer_access_Token, rather than access_token。

2, the service provider can successfully invoke a Official Account message template or Mini Program on behalf of the merchant, depending on the Official Account message template Or whether the Mini Program administrator grants the corresponding permission set to the current third-party platform account.

3, call the API there is no permission problem, you can viewTroubleshooting guide。