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I have my sandbox account linked with my PayPal business test seller account. I am trying to open a Basic Store, but I am getting this error. What can I do?
This error is an indication of some settings on the user being corrupt. The best thing to do is to run a ValidateTestUserRegistration call as below. After the call executes successfully try to subscribe to the store.
| <?xml version="1.0" encoding="utf-8"?>
<!-- Standard Input Fields -->