{"appid":"*","sub_mchid":"*","description":"停车缴费","out_trade_no":"20210709142838","trade_scene":"PARKING","notify_url":"*","amount":{"total":1},"parking_info":{"parking_id":"01002441406016258121153208211","plate_number":"苏A9M62N","plate_color":"BLUE","start_time":"2021-07-08T14:28:37+08:00","end_time":"2021-07-09T14:28:37+08:00","parking_name":"万象城停车场","charging_duration":86400,"device_id":"c6s4gtg7"}}

参数都和文档对照过了

rsp: {"code":"PARAM_ERROR","message":"参数错误"}