Unable to Get New Access Token-OAuth2.0

Question

I am trying to create a Postman Collection and connect it to Brightspace. And I used OAuth 2.0 as the Auth Type. I followed the process mentioned in the documentation attached below. We are unable to create a token to establish the connection as it is giving us an error “Invalidredirect Uri:” below is the screenshot of the details mentioned in the Postman Collection. Please help us with necessary changes to complete this connection.

BrightspaceAPI Documentation : OAuth 2 authentication — Developer Platform (February 2026)

Callback URL:

https://lms-oauth2-staging.thecoursekey.com/authorize

& also tried using

https://oauth.pstmn.io/v1/callback

and

https://oauth.pstmn.io/v1/browser-callback

Auth URL : https://auth.brightspace.com/oauth2/auth

Access TokenURL : https://auth.brightspace.com/core/connect/token

Client ID: ****

Client Secret: ***

Scope :content: api:*:* content:*:* core:*:* datahub:*:* discussions:*:* enrollment:*:* grades:*:* organizations:*:* orgunits:*:* outypes:*:* quizzing:*:* reporting:*:* users:*:*

Error:

{"error":"invalid_request","error_description":"Invalid redirect_uri: https://oauth.pstmn.io/v1/browser-callback","rfc6749_reference":"4.1.2.1, 4.2.2.1"}

{"error":"invalid_request","error_description":"Invalid redirect_uri: https://oauth.pstmn.io/v1/callback","rfc6749_reference":"4.1.2.1, 4.2.2.1"}

Screenshotof the Postman Create Collection Interface:

Venkata.G.6239 · Answer

We were able to fix it. Its the issue with the previous access token that was in the environment that the collection is referring to instead of generating a new one token.

Thanks

Chris.S.534 · Answer

Hi Venkata,

I'm not a developer but double check the values in the registered OAuth application against those used in Postman:

* Ensure the Redirect URI registered is the same as that configured in your Postman Callback URL e.g. https://oauth.pstmn.io/v1/callback
* Check your scopes are defined properly e.g. content: api:: doesn’t look to be correct
* Double check the Client ID / Client Secret are correct

Hope that helps!