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'invoice has already been paid' from PayPal

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I get this error when I send any invoices to PayPal IPN. 'This invoice has already has been paid' comes back no matter what I do.


I tried searching for the error message, but the volume of posts related to this contribution is immense.


Thanks in advance. :blink:

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Same here......it has to do with invoice id'ing.

The text file included in the contribution gives a couple fixes, ones is a hack, and one is to disable invoice sync in your paypal account....which will allow people to pay twice if anything goes wrong.


I read till my eyes bled...and said forget it.... and uninstalled it

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