Standard - 4.2.1. response_type and Flow pattern matrix should be declared.

[hideki nara]

As I properly understand, there is no hybrid flow in which "code in query" and "tokens in fragment" for single response.

If it is right, I think that "response_type=code" is the only case for Code Flow.

Or can OP + User return only code in the response for a "response_type=code id_token" request and ask RP to get ID Token from token endpoint?

But omitting ID Token in response must means that End User or OP rejected returning ID Token.

[John Bradley]

This was confusing and the encoding of the response belongs in response.

code on it's own is valid the id_token comes from the token endpoint, that is the only case where the response is in a query parameter rather than the fragment. Those lines are removed.

ALL other combinations result in fragment encoding.

[hideki nara]

Thanks a lot, John. Clear now.