i've been using PayPal REST API since some months to handle sale payments programmatically without problems, both on live and sanbox platform. From a couple of days I figured that, only for sanbox, is impossible to finalize (execute) payments using resource POST https://api.sandbox.paypal.com/v1/payments/payment/PAY-xxxxxxxxxxxxxxxxxxxx/execute, indeed I get every time INTERNAL_SERVICE_ERROR response with status code 500.
Last response:
Got Http response code 500 when accessing https://api.sandbox.paypal.com/v1/payments/payment/PAY-xxxxxxxxxxxxxxxxxxxx/execute. {"name":"INTERNAL_SERVICE_ERROR","message":"An internal service error has occurred","information_link":"https://developer.paypal.com/docs/api/#INTERNAL_SERVICE_ERROR","debug_id":"2205fb9528a0f"}
Any idea about what is happening?