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I get the following error, after pressing the Paypal button:
Error - Double check your Business API settings.
SetExpressCheckout API call failed.
Detailed Error Message: You are not signed up to accept payment for digitally delivered goods.
Short Error Message: Transaction refused because of an invalid argument. See additional error messages for details.
Error Code: 10004
Error Severity Code: Error
The same button works OK in sandbox mode.
Solved! Go to Solution.