"If there is no banner, your Actions project is not a Conversational Action and won’t be affected."

Here, "conversational" means your voice command should prompt the app to ask you a question, driving a state machine. (Set a reminder. When do you want to be reminded?)

I haven't tried to use it, but the docs indicate CRUD-over-voice ("built-in intents") is unaffected.

https://developers.google.com/assistant/ca-sunset#what_will_...

https://developer.android.com/reference/app-actions/built-in...