How can I retrieve vendor, user, Pass and partner details from sandbox.paypal.com?
I am using PayPal Express Checkout and PayPal Payments Pro. When using PayPal Express individually, it works fine. However, when I use it with PayPal Payments Pro, I receive the following error:
“PayPal gateway errors: User authentication failed.”
How can I resolve this issue?
https://tinyurl.com/2a8xfuma