I am getting e-mails from PayPal saying the following:
"10415 Transaction refused because of an invalid argument. See additional
error messages for details. - A successful transaction has already been
completed for this token."
According to this page, error code 10415 could mean that customers are hitting the "Place Order" button twice.
Is there any way to fix this? Is this something I need to fix? I searched the forum for "10415", but could not find anything.
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