OAUTH 2.0 for exposing a rest Service. PRPC 7.2.1

HI All,

We are trying to enable OAUTH for the PEGA API. I have configured the oauth as per the instructions mentioned in

BUt when i am trying to generate the token i am getting error message. PLease find the request and response below.




{"errors": [
"ID": "unsupported_grant_type",
"message": "The grant type is not supported by the authorization server."
"ID": "invalid_request",
"message": "The request is missing a required parameter."

can any one help me in understanding if there is any thing i am missing.

Also find the attached screenshot of the Oauth Client Registration rule.


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May 20, 2018 - 1:58pm

August 17, 2018 - 11:39pm


In your request to rest service, the grant type be as below:




April 15, 2019 - 7:34am


I have the similar requirement to generate the access token for external application to access PEGA service. I followed the same process as mentioned in the article "" but i am getting below error in postman. 

    "errors": [
            "ID": "invalid_authorization_header",
            "message": "Invalid Authentication Data."

Any help ?