{“error”:“unsupported_grant_type”,“error_description”:“grant type not supported”}

When you face {“error”:“unsupported_grant_type”,“error_description”:“grant type not supported”} error, put all the information in the body instead of header.


1. If you are using POST, check whether the Content-Type is set as application/x-www-form-urlencoded.

2. Check whether setBody() has correct body data.

Cheers!!!

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