I was testing my online store and got this error when I used paypal to checkout:
PayPal gateway has rejected request. The totals of the cart item amounts do not match order amounts (#10413: Transaction refused because of an invalid argument. See additional error messages for details).
I have searched here but they relate to version 1.7 or 1.8. Is there a solution for 1.9.1?
Best Answer
In my experience this happens occasionally due to decimal rounding differences when multiple cart items are passed to Paypal. To avoid the error completely I disable the Transfer Cart Line items option.