微信支付退款申请，提示商户号该产品权限未开通，需要怎么解决？

AI助手支持GPT4.0

微信支付退款申请，提示商户号该产品权限未开通，需要怎么解决？WeChat Pay refund application, it prompts the merchant account that the product permission is not activated, what should I do?

Wechat applet is bound with the merchant ID, wechat payment is opened, and jsapi on the merchant account is also opened. Wechat payment can be successful, but when you apply for refund, you will be prompted that the product authority of the merchant account has not been opened. Please go to the merchant platform > Product Center to check and try again. Why is the authority not opened?

回答：

trade_type