Hi @Ruchi
An access token is required in postman to call that API endpoint.
First go to Azure AD, then find your app and put https://oauth.pstmn.io/v1/browser-callback
in Redirect URIs and save.
Next go to postman, select OAuth 2.0 in the dropdown box in Authorization, and set the property value to:
Auth URL-> https://login.microsoftonline.com/{tenant id}/oauth2/v2.0/authorize
Access Token URL-> https://login.microsoftonline.com/{tenant id}/oauth2/v2.0/token
After that, this will ask you to login as administrator and agree to the Policy.Read.All
permission to get an access token, then you need to click on Use Token to call the API.
Hope this helps.
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