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I'm using django-shop-paypal and when i want to checkout via paypal I get a message "invoice has already been paid". The plugin posts the order ID as unique-invoice-id like 17 or 18.

When I manually change the unique-invoice-id to something like 189674 in the form and post to Paypal the checkout will work correctly.

Does anyone know why a simple small unique number does not work?

Thanks

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1 回答 1

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这可能是因为您已经收到了相同编号的已付款发票（可能使用不同的站点或以前的测试）

要么在发票号码前加上唯一的代码或号码以使发票号码不同，要么登录贝宝并允许支付重复的发票号码。

我的账户 > 个人资料 > 销售偏好

阻止付款 限制付款、添加说明等。点击更新

阻止意外付款：您可以通过阻止重复的发票 ID 来防止意外付款 否，允许每个发票 ID 多次付款

于 2014-04-22T16:21:02.937 回答