请求:https://api.mch.weixin.qq.com/v3/marketing/favor/users/*******/coupons {"stock_id":"151*****","out_request_no":"1493284912*******","appid":"wx7cfb80e******","stock_creator_mchid":"1592*****"} 响应:{"code":"PARAM_ERROR","message":"参数错误，请核对文档要求"}