Do candidate actions have to appear in log if multiple matches?

[xperiandri]

In log I see

Microsoft.AspNetCore.Mvc.Versioning.ApiVersionActionSelector:Information: Multiple candidate actions were found, but none matched the requested service API version '1'. Candidate actions:

And I can't figure out what is wrong/

[commonsensesoftware]

The candidate action list is a multi-line list of candidates that the routing infrastructure discovered. If you don't see any matches, then there aren't any candidates. This process happens before any API version-related logic and is unchanged from the default, built-in behaviors. If you're not seeing any candidates, then I suspect that your routes are not configured correctly (either by template or attributes).

[commonsensesoftware]

After some investigation, this looks like a bug in ApiVersionActionSelector.cs (Line 215). The logged set of candidate action names should derive from candidates instead of context.MatchingActions (which may be none). Good catch.