Hi!
I have issue with Express Checkout.
Recently, I have created new Payment System in PHP.
Everything is ok under sandbox, but when I switched to production using PayPal account which is already working with some other applications, it is failing. Here some info:
SetExpressCheckout: PayPal response looks good - ACK is Success and TOKEN is returned.
GetExpressCheckoutDetails: ACK is Success, but CHECKOUTSTATUS is PaymentActionNotInitiated
DoExpressCheckoutPayment: ACK is Failure, L_ERRORCODE0 is 10411, L_SHORTMESSAGE0 is "This Express Checkout session has expired." and L_LONGMESSAGE0 is "This Express Checkout session has expired. Token value is no longer valid."
I changed Server Time Zone to US Central - same thing. Actually, I don't send any time values in my requests, so it's just pointless trial.
What could be the reason of this error?
Thanks!