Got Http response code 401

[junlu003]

Hey Dear, could u give us some clue why we are integrating our REST API to PAYPAL

Always sending back the following information: “Got Http response code 401 when accessing https://api.sandbox.paypal.com/v1/oauth2/token.”

[MTS_Andre]

Hi Junlu003, the http 401 generally means: Unauthorized AUTHENTICATION_FAILURE. Authentication failed due to invalid authentication credentials.

You can use this link as reference.

Check that you are using your Live API credentials on Live, while if you are using Sandbox environments make sure you are providing the Sandbox credentials to your integration / API call.