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微信统一下单 返回结果是什么意思？没有错误代码查看，怎么查找原因？
这是调取https://api.mch.weixin.qq.com/pay/unifiedorder接口 返回的结果：<xml><return_code><![CDATA[FAIL]]></return_code><return_msg><![CDATA[????????????]]></return_msg></xml>下面是微信校验工具测试通过的接口参数（具体参数没贴出来，只是贴出来一个校验结果）#4.校验结果：原sign值:2CB5CB7A22A4242645B96F2D9F765ECD2480C2E6B4009BF86FD7484D7A8A2057新sign值:2CB5CB7A22A4242645B96F2D9F765ECD2480C2E6B4009BF86FD7484D7A8A2057校验通过请问这个问题我怎么排查？？
This is retrieval https://api.mch.weixin.qq.com/pay/unifiedorder The result returned by the interface: < XML > < return_ code> < / XML > the following are the interface parameters tested by wechat verification tool (the specific parameters are not pasted, but only a verification result is pasted) Ţ 4. Verification result: original sign value: 2cb5cb7a22a4242645b96f2d9f765ecd2480c2e6b4009bf86fd7484d7a8a2057 new sign value: 2cb5cb7a22a4242645b96f2d9f765ecd2480c2e6b4009bf86fd7484d7a8a2057 verification passed. How can I check this problem? ?
你好，可通过查单接口。查询该笔订单的具体订单状态。建议重新再发起一笔支付。