Despite following the xero documentation on creating and authorizing an app using postman, when the browser window pops up to login, I get an error 500 and "Error: unauthorized_client : Unknown client or client not enabled".
I have created the app in the developer centre and generated a secret for it as instructed in the documentation.
I am trying to get to generating an access token for use in my application.
Can anyone fill in the tiny bit that I somehow missing ?