Customers are used to send payment to my account using my magento website but whenever any of the customer pay with paypal button they gets an error of "Paypal gateway has rejected request.Payment has already been made for this invoice id (#10412. Duplicate invoice) ".
Hello, @David_2011. Thanks for taking the time to add your concern here on the PayPal Community Forum. The best resource to address your concern is the PayPal Merchant Technical Support website. Please submit a ticket at https://www.paypal-support.com/s/?language=en_US. You may also be able to find information to address your concern on the PayPal Developer website at https://developer.paypal.com/home.
I hope this is helpful. Thanks for your patience during this time.
