为何最近有些客户的一些用户使用公众号支付会出现在system:access_denied这种错误，用户之前还使用很长一段时间公众号支付都没出现这种问题，但是现在突然出现这个未知现象，代码也没有动过，现在几十个客户已经有4个客户都在问这是什么情况了，请问是微信官方改动了什么吗！
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- Notice of Product System Removal: 小商店/Development/Capabilities/Commercial capabilities/Trading component/Custom trading components and open interfaces/Event callback/Product System Offline Callback
- Request Parameter Sample: 小商店/Development/Capabilities/Commercial capabilities/Trading component/Custom trading components and open interfaces/Event callback/Product System Offline Callback
- Return Package Example: 小商店/Development/Capabilities/Commercial capabilities/Trading component/Custom trading components and open interfaces/Event callback/Product System Offline Callback
- Request Parameter Dxplaination: 小商店/Development/Capabilities/Commercial capabilities/Trading component/Custom trading components and open interfaces/Event callback/Product System Offline Callback
- Return parameter specification: 小商店/Development/Capabilities/Commercial capabilities/Trading component/Custom trading components and open interfaces/Event callback/Product System Offline Callback
https://developers.weixin.qq.com/community/develop/doc/0000c2be9dc3a8eb8b6a5d8bc54400?_at=1590993404158您好，您的问题参考一下这里。之前有回复过。