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扫码合单交易退款查询
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文档:
smzf/api_merge_qrpay_tkcx
接口:
POST https://api.huifu.com/v3/trade/payment/scanpay/merge/refundquery
业务参数 data(JSON,不含 sys_id/product_id/sign)
{ "req_date": "20260808", "req_seq_id": "202608081421035140" }
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