Fixed – MisMatchingOAuthClaims – One or more claims either missing or does not match with the open authentication access control policy error – OAuth Authentication for HTTP Request trigger (Power Automate)ismatch

Recently while trying to invoke the HTTP Request trigger, on passing the token we got the below error from the Postman

{
    "error": {
        "code": "MisMatchingOAuthClaims",
        "message": "One or more claims either missing or does not match with the open authentication access control policy."
    }
}

Turned out that we missed the trailing slash for the resource’s value while generating the token.

Audience values as expected in the claim.

https://jwt.io/

On correcting the resource value, and using the new generated token,

fixed the mismatch claim issue

Below is our flow

Refer – https://nishantrana.me/2025/01/28/configure-oauth-authentication-for-http-request-triggers-specific-users-in-my-tenant-power-automate/

Get more details

Hope it helps..

Author: Nishant Rana

I love working in and sharing everything about Microsoft.NET technology ! View all posts by Nishant Rana