交易组件生成订单接口文档不明

请问fund_type = 0时必传什么东西？？？传递了"pay_info":{"pay_method_type":0} 提示 "errcode":1010004,"errmsg":"pay_info字段异常，请检查json及字段合法性"

pay_info PayInfo 否 fund_type = 0 必传｜https://developers.weixin.qq.com/miniprogram/dev/platform-capabilities/business-capabilities/ministore/minishopopencomponent2/API/order/add_order_new.htmldu