同一个商户号下面有两个appid（A, B)，A在支付签约接口返回正常，B在支付签约接口返回错误，如下所示（已隐藏掉appid等参数）。B正常请求预支付没问题。B是在该商户号已申请委托代扣之后才绑定到该商户号的。代扣模板id也是在B加入该商户号之前申请的。 请求参数： [代码]<[代码][代码]xml[代码][代码]>[代码] [代码]<[代码][代码]appid[代码][代码]>[代码][代码]<![CDATA[****]]>[代码][代码]</[代码][代码]appid[代码][代码]>[代码] [代码]<[代码][代码]body[代码][代码]>[代码][代码]<![CDATA[连续包月]]>[代码][代码]</[代码][代码]body[代码][代码]>[代码] [代码]<[代码][代码]contract_appid[代码][代码]>[代码][代码]<![CDATA[****]]>[代码][代码]</[代码][代码]contract_appid[代码][代码]>[代码] [代码]<[代码][代码]contract_code[代码][代码]>[代码][代码]<![CDATA[1233990201904111053020b7c6634ac9]]>[代码][代码]</[代码][代码]contract_code[代码][代码]>[代码] [代码]<[代码][代码]contract_display_account[代码][代码]>[代码][代码]<![CDATA[******]]>[代码][代码]</[代码][代码]contract_display_account[代码][代码]>[代码] [代码]<[代码][代码]contract_mchid[代码][代码]>*****</[代码][代码]contract_mchid[代码][代码]>[代码] [代码]<[代码][代码]contract_notify_url[代码][代码]>[代码][代码]<![CDATA[https://******/wxpay/contract/sign]]>[代码][代码]</[代码][代码]contract_notify_url[代码][代码]>[代码] [代码]<[代码][代码]mch_id[代码][代码]>*****</[代码][代码]mch_id[代码][代码]>[代码] [代码]<[代码][代码]nonce_str[代码][代码]>[代码][代码]<![CDATA[q6yr3cvgd3kdsitoahrjkgc5ek2ftsme]]>[代码][代码]</[代码][代码]nonce_str[代码][代码]>[代码] [代码]<[代码][代码]notify_url[代码][代码]>[代码][代码]<![CDATA[https://******/wxpay/notify]]>[代码][代码]</[代码][代码]notify_url[代码][代码]>[代码] [代码]<[代码][代码]out_trade_no[代码][代码]>[代码][代码]<![CDATA[1000700201904111053020bd16634ac4]]>[代码][代码]</[代码][代码]out_trade_no[代码][代码]>[代码] [代码]<[代码][代码]plan_id[代码][代码]>123399</[代码][代码]plan_id[代码][代码]>[代码] [代码]<[代码][代码]request_serial[代码][代码]>91</[代码][代码]request_serial[代码][代码]>[代码] [代码]<[代码][代码]sign_type[代码][代码]>[代码][代码]<![CDATA[MD5]]>[代码][代码]</[代码][代码]sign_type[代码][代码]>[代码] [代码]<[代码][代码]spbill_create_ip[代码][代码]>[代码][代码]<![CDATA[*****]]>[代码][代码]</[代码][代码]spbill_create_ip[代码][代码]>[代码] [代码]<[代码][代码]time_expire[代码][代码]>20190411110302</[代码][代码]time_expire[代码][代码]>[代码] [代码]<[代码][代码]time_start[代码][代码]>20190411105302</[代码][代码]time_start[代码][代码]>[代码] [代码]<[代码][代码]total_fee[代码][代码]>12800</[代码][代码]total_fee[代码][代码]>[代码] [代码]<[代码][代码]trade_type[代码][代码]>[代码][代码]<![CDATA[APP]]>[代码][代码]</[代码][代码]trade_type[代码][代码]>[代码] [代码]<[代码][代码]sign[代码][代码]>[代码][代码]<![CDATA[EB686C97FD7FBD012A29035B53D13070]]>[代码][代码]</[代码][代码]sign[代码][代码]>[代码] [代码]</[代码][代码]xml[代码][代码]>[代码] 返回结果： [代码]{[代码] [代码]"appid":"****",[代码] [代码]"contract_err_code":"SYSTEMERROR",[代码] [代码]"contract_err_code_des":"system error",[代码] [代码]"contract_result_code":"FAIL",[代码] [代码]"mch_id":"****",[代码] [代码]"nonce_str":"5AXg58lcSA5sI3n2",[代码] [代码]"prepay_id":"wx111053027459634030d9db92142*****",[代码] [代码]"result_code":"SUCCESS",[代码] [代码]"return_code":"SUCCESS",[代码] [代码]"return_msg":"OK",[代码] [代码]"sign":"FAC30FE821ACA1FF60EBF2FDF8ACA501",[代码] [代码]"trade_type":"APP"[代码] [代码]}[代码] 相似问题未解决 https://developers.weixin.qq.com/community/develop/doc/000c620a6dcd58af07683f2a952800?highLine=%25E7%25AD%25BE%25E7%25BA%25A6 https://developers.weixin.qq.com/community/develop/doc/0004c2ff4942c8aad2e78b21456400?highLine=%25E7%25AD%25BE%25E7%25BA%25A6