你好，我们开发微信商家券功能，调用上传预存code API：

请求地址： https://api.mch.weixin.qq.com/v3/marketing/busifavor/stocks/1268660000000001/couponcodes

headers:

Content-Type:application/json

   Authorization:WECHATPAY2-SHA256-RSA2048 mchid="1335020501",nonce_str="kDBWXmkqcm",timestamp="1575944947",serial_no="4FDFA742E16393D3011B7F37C3A58A783F56EE18",signature="npLsz0MGPp882RrnLZOwsVEiNtPKbeqm0qnDG/puDhfvPvFRztWB6YuITAo4R0lUTGfPSoz8DjZhRbj5OnFDCpiiJZkZAaUgCJGLXZfm7DRBlKtmydW6ujO5DXeABrwA0OrgMcC2t3PUVVcnA8o/8I0Auq72pbEUkSK7WYv3PoMuB5HIP4OW2Kr5caU/fqJ76wRHcwGGbFPUT8vvMwTQ4UfkL+Ae2c/xMUkFaObs/VDNBOcufUagFhsgbjuokKf1FxNcJtdLJGMP5hPTrzgGwSGeQtj7FKdPKjguAR8O7E/OdZy7Q4Nak/Yoo1pchJyJLJgbO2aFyL3lGEFfyhKMEA=="

请求body： {"coupon_code_list":["Z2Cvj6wuK","X3Cv2RiRh","yTvQHBMzO","hwRL1otzs","oPQj97sPj","EjswxqA2o","f0Jkc1TFy","jsgYnwOGL","Rcr8p75b7","gp9E2iL1K"],"upload_request_no":"1575944923057mbsQ3ayh"}

错误返回：

{

    "code": "INVALID_REQUEST",

    "message": "发券模式不合法"

}

这个原因是什么，创建商家券和查询商家券接口是成功的，麻烦解答下，谢谢