Invalid client id

I have provided correct client id but still getting invalid_request: The required parameter client_id is missing or invalid. this while trying to authorize

Can you share the address you are using (and obfuscate the client id)?

I am also getting same error with client_id missing.
URL: https://app.asana.com/-/oauth_authorize?client_id=1206203602390224&redirect_uri=http://localhost:8081/callback&response_type=id_token&state=token

This client id is provided by another user and getting Invalid request error.

I tried and the error is The required parameter client_id is missing or invalid so I am tempted to say in your case it is invalid. Where do you get the id from?