基础支付中的合单支付，下单接口中combine_mchid和mchid是什么关系？ 需要绑定么？跟电商收付通有什么关系？
合单支付中，子商户号与combine_mchid不同，退款应该怎么退？[图片] 请求：url:https://api.mch.weixin.qq.com/v3/refund/domestic/refunds, params: {"transaction_id":"4341700955202104282513163119","reason":"用户取消订单","amount":{"total":1,"currency":"CNY","refund":1},"out_refund_no":"210428572698678454","notify_url":"https://paycenter-dev.zuzuche.com/notify/3152/async"} 响应：{"code":"INVALID_REQUEST","message":"您的请求参数与订单信息不一致"} 换了方式请求：url:https://api.mch.weixin.qq.com/v3/refund/domestic/refunds, params: {"reason":"用户取消订单","amount":{"total":1,"currency":"CNY","refund":1},"out_trade_no":"1001772413","out_refund_no":"210428572698678453","notify_url":"https://paycenter-dev.zuzuche.com/notify/3152/async"} 响应：{"code":"RESOURCE_NOT_EXISTS","message":"订单不存在"} 请帮忙看看解决下，比较着急
2022-04-01
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