I am using developing payment services in PayPal. I have the PayPal Manager account. I followed the documentation. But at the time of payment with credit card the test credit cards nor any credit cards from the sandbox accounts are working. Following message appears.
What are the possible solutions?
As using PayPal Manager. Make sure following setting for test are sets
After Login to developer account of PayPal then go to the profile of the sandbox that is attached to manager account. Upgrade your sandbox Account Type to Pro