As far as i know the token created after the SetExpressCheckout API is valid for 3 hours.
I am not able to figure out if there's any method that we could call to invalidate/cancel the token after a user clicks on the cancel button of the PalPay Page or if the customer cancels the order in the confirmation page (before DoExpressCheckoutPayment call). Could you help me out and tell me if it is possible or not to invalidate one transaction token through PayPal?
Thanks in advance,
Edgar
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