请求数据如下，一直返回return_msg=System Error, return_code=FAIL，没别的错误说明， <?xml version="1.0" encoding="UTF-8" standalone="no"?> <xml> <time_expire>20191212090554</time_expire> <nonce_str>x5xN6HzcrtBTGThUkgapgNpXSHmZ2GC5</nonce_str> <combine_appid>wxafb2df76dd468b91</combine_appid> <time_start>20191211090554</time_start> <sign>4F1BFEA7D05CF58BAD7B116B77E98ED450B54F1CD9E590F8E6147E4091AB27A4</sign> notify_url>http://111.115.51.74:8086/eshop/wx/notify/notify_url> <spbill_create_ip>111.115.51.74</spbill_create_ip> <device_info>test</device_info> <combine_openid>oJJ--4r_TBCePl0q6bmES08rYsw4</combine_openid> <combine_out_trade_no>Xnszi3ODssuxv5orUIeNK3FOjHl9MVnG</combine_out_trade_no> <trade_type>JSAPI</trade_type> <sub_order_list>{"order_list":[{"appid":"wxafb2df76dd468b91","attach":"test","body":"test-零售","fee_type":"CNY","mch_id":"1561080281","out_trade_no":"zuwT6u8Mon0qsZVqW2HO7ivYeeAjZPRQ","sub_mch_id":"1561080281","total_fee":10},{"appid":"wxafb2df76dd468b91","attach":"test","body":"test-租赁","fee_type":"CNY","mch_id":"1561080281","out_trade_no":"PXiHK61zaj5W4ty618smMu6VTm71LGHD","sub_mch_id":"1561080281","total_fee":10}],"order_num":2}</sub_order_list> <sign_type>HMAC-SHA256</sign_type> <combine_mch_id>1561080281</combine_mch_id> </xml>

调用合单下单api，一直返回“System Error”，使用“”签名校验工具”是通过的，不知道是原因？ [图片]

我们的业务用户不授权没办法进行下面的业务，现在用户可以看到首页界面功能，点击功能授权登录，这样做也审核不了?