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商家发起转账 签名错误?

响应:{"code":"SIGN_ERROR","detail":{"detail":{"issue":"sign not match"},"field":"signature","location":"authorization","sign_information":{"method":"POST","sign_message_length":957,"truncated_sign_message":"POST\n/v3/fund-app/mch-transfer/transfer-bills\n1741685119\n174168511927498\n{\"appid\"\n","url":"/v3/fund-app/mch-transfer/transfer-bills"}},"message":"错误的签名,验签失败"}

旧版商家转账 更新 新版商家转账,序列号、公私钥、证书以及商户信息都没换过,新版商家转账不就是调整了几个参数吗,全是按着文档上来的,调整完成之后就报参数错误... 到底是哪里错了?也没个具体描述

body体:{"appid":"wx0856e916ea5e397a","out_bill_no":"20250311104125875987","transfer_scene_id":"1005","openid":"o2B1V5dDNZzu21BXo-YbDt4LgQa4","user_name":"nWYXbXkci\/\/pWqE93axhskkS4SfBVOj11LA02MoORWO4aIaNth6pqPCwLQ3isIGWaXV8BAHu79ZEJbP0MowMyhMR2yiadVEjE77lpNSKhG81jJqiX+efX29Uxc1+hCZqmGXS6rWXx4ZLTMe7wwJzYlmanP3lzFPxYWKbfOjXifEDiDcI2A1sJr5nps8UzuHC0VtxOdkNfjBA7ZFWaKwdcLKKLZt8178sWgFOXY27QkgVEoyG0hKBQuQYSF06cOaFpII1y1XoRAA49HTEkhcd6GmOosOalH7H7ocEVdIBrCuG6pVlsx5a12JOEeC+YUGAOVePZ1j0P4TWKwEqznHmUQ==","transfer_amount":299,"transfer_remark":"\u63d0\u73b0\u8f6c\u8d26","notify_url":"https:\/\/www.hbfxyx.cn\/Api\/Notifyin\/transferPayNotify","user_recv_perception":"\u52b3\u52a1\u62a5\u916c","transfer_scene_report_infos":[{"info_type":"\u5c97\u4f4d\u7c7b\u578b","info_content":"\u5546\u57ce\u4f1a\u5458"},{"info_type":"\u62a5\u916c\u8bf4\u660e","info_content":"\u4f1a\u5458\u63d0\u73b0"}]}

header请求头:["Authorization:WECHATPAY2-SHA256-RSA2048 mchid=\"1646561892\",nonce_str=\"174168511927498\",timestamp=\"1741685119\",serial_no=\"39BA1BFE590DDEDFD59353020CDB1A55178BD70F\",signature=\"t+GAnBr9URAVG2y3FqWVFHK1heQcztRcNlS9c\/OQMCqUJ47bmWt4YP3Zk\/FK2GmPKqhEsKa8q5wjlpvo1pNHi8dYObK9zkDkLyvEXYE8zK2rMnVx03x+uY+3QRGn9dlpEaHHW8iOlnEr5ttc1T+0AdRO9is9Kt8OLXUuSVESsHrm+wfFJYsPPmO+JoVI9pDfyNCefWO4boS6+IN0aNLutm77n8gwFldTx39f\/LUEIy76KdqNolKekit5O1YrqMsxsBIdbPd1xJsvza2EA7uMbq7IHBltTocP45b6t95RmDxyPp+4Ikqfpvq9cboWAtjzOChTW7Kou0AD4FUXhes4Mw==\"","Accept: application\/json","Content-Type: application\/json; charset=utf-8","User-Agent:Mozilla\/5.0 (Windows NT 10.0; WOW64) AppleWebKit\/537.36 (KHTML, like Gecko) Chrome\/63.0.3239.132 Safari\/537.36","Wechatpay-Serial:1297A15D3AE46B7309846FD037B603A684EE424D"]

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