If you want to provide "WeChat fast invoice" service for consumers or merchants, please complete "WeChat authentication" on Service Account first.

When Service Account passes the "WeChat authentication," the corresponding APPID has access to the relevant interface.

After permission is opened, you can continue to develop the API interface in accordance with the documentation requirements.

WeChat Introduction to Certification http://kf.qq.com/faq/120911VrYVrA151214Fz26zm.html

If you are using an APPID that is "WeChat certified," but you are still experiencing permission problems (error code: 48001).

You can e-mail to us by format wxfapiao@tencent.com Give feedback.

Email title: [WeChat fast invoicing authority opened] + business name

Email body: company name + associate name + associate phone + associated Service Account APPID

Email Attachment: Company Business License

Note: It is important to provide the correct association Service Account APPID.This APPID is required to connect the relevant interface