User Not Authenticated. Could not retrieve a new access token with the refresh token. invalid_reques

[naveenreddy0871]

Hi ,

I have configured my rest message with Type = OAuth Provider (Oauth2.0) and Grant Type = Authorization Code.and trying to test the API but getting the error as "User Not Authenticated. Could not retrieve a new access token with the refresh token. invalid_request, Missing parameters: access_token" .

I have refresh token and it is not expired, (OAuth Refresh token is available and will expire at 2026-07-07 05:56:13.)

HTTP error code is 0.
Thanks in advance.

[Tanushree Maiti]

Hi @naveenreddy0871 

It seems ServiceNow OAuth flow has broken during the token exchange step. While authentication may have succeeded, the system failed to receive a valid access token in the expected format.

1. Ensure the access token is sent correctly in API calls
   • When calling the ServiceNow API (or any protected API) from the bot/Teams app, the access token must be included in the Authorization header:
     • Authorization: Bearer <access_token>
   • If the endpoint expects the token as a parameter and not a header, ensure the parameter name and placement match the ServiceNow OAuth/API specification.
   • The error message explicitly says Missing parameters: access_token, which means the endpoint did not receive the token in the expected place.

Refer: OAuth flow failed. Verify the configurations and try again. Error detail:invalid_request, Missing pa... 

[Deepak Shaerma]

hi @naveenreddy0871 

Please check your record on Application Registry , look for the default grant type or send credentials dropdown.If it is set to as Basic Authorization Header, change it to in body (or vice versa)

Happy to help! ‌‌
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Warm Regards,
Deepak Sharma
Community Rising Star 2025