Document each change and when there is a breaking change note for which role it breaks.
e.g.
A 2.1 client trying to work with a 2.0 server that uses PKCE would break if the redirect_uri is not sent to the token endpoint if the client is configured with more than one redirect_uri.
Document each change and when there is a breaking change note for which role it breaks.
e.g.
A 2.1 client trying to work with a 2.0 server that uses PKCE would break if the redirect_uri is not sent to the token endpoint if the client is configured with more than one redirect_uri.