Using PayPal Payment Pro on a Magento 1.6 site. When a new order from a credit/debit card checks out using PayPal payment pro the order is not showing in magento admin. also received the error message below when customer check out straight away with a paypal account(see attchment).
Error message: PayPal gateway has rejected request. A successful transaction has already been completed for this token (#10415: Transaction refused because of an invalid argument. See additional error messages for details).
I want someone who has done this before in Magento, so no trial please. If you know how to do it, please let me know. Thanks
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Hi I am working on PayPal Cart and billing from 5 years and solved many quite similar type problem