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Question:

I received asynchronous notifications for orders from one year ago. gmt_create shows it's from 1 year ago, and trade_status is TRADE_FINISHED, why?

Answer:

Alipay sends asynchronous notifications when the transaction status changes. For In-store Payment Products, after the refund period is expired, the order status will change from TRADE_SUCCESS to TRADE_FINISHED, triggering an asynchronous notification. The refund period is generally 365 days, so you might receive an asynchronous notification a year later.

背景：

在境外当面付业务中，商户可能会在支付成功365天后又收到一次异步通知。

其中gmt_create为1年前，trade_status为TRADE_FINISHED。

原因：

支付宝会在交易状态发生改变时发送异步通知。

因此支付成功时会发送异步通知。

此外，在境外当面付业务中，超过退款期限之后，订单状态会从TRADE_SUCCESS变为TRADE_FINISHED，也会触发异步通知。

而退款期限一般为365天，因此商户会在一年之后又收到一次异步通知。