xero-postman-oauth2
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Step 5.7 Get New Access Token fails with Error: unauthorised_client: Unknown client or client not enabled
OS: Ubuntu 18.04.5 Postman: v8.2.3
When following the official documentation step 5.7 does not produce the login screen as is indicated, it fails with:
Any input on this would be greatly appreciated.
I faced the same error. Check client id & client secret.
Works fine now ☺️