顾客下单后，商家端提示失败

失败原因:{"resultcode":4,"resultmsg":"参数格式错误：请求参数delivery_service_code转换错误","fee":0,"deliverfee":0,"couponfee":0,"tips":0,"distance":0,"waybill_id":"","order_status":0,"finish_code":0,"pickup_code":0,"dispatch_duration":0,"sender_lng":0,"sender_lat":0}