We use PayPal Express (along with other Gateways) in our ASP.Net Application. It is working fine, and we even received an order this morning via PayPal Express successfully.
However, one of our customer receives the following error message while checking out -
Invalid Item URL. Transaction refused because of an invalid argument. Error Code: 12114
Unfortunate, I could not find 12114 error code in API Error and Warning Codes
I'm wondering what might cause that error except from what is stated about.