When I take the auth code and try to fetch the token using Postman client I am getting “authorization code is invalid or has expired”. Please find the screenshot below
@pradeepkumarl Can you attach the full url to retrieve the code? What is the redirect URI?
I think you are currently following the correct guide. You just need to exchange code with the token.
In your postman, did you configure client_id and secret under authorization tab?
Also, the code is expired very soon. It is better to set up postman environment well first and then request a code. Once you get a code, fill it in postman soon and click send button.