Please Help with Paypal Integration
I am using pay payments advanced and I get this error now on checkout...
"Some required information is missing or incorrect. Please correct the fields below and try again.
Error: Merchant Design Identification Error."
is this on your side or paypal's side. If its on Paypal side, is there extra integration I need to do on that end to make it work?
I know my username and password is right because I am not getting the error "user authentication failed"