When are all actors present

Hi, I want to ask if in BeginPlay there are all actors initialized and present.

I use a ActorIterator in BeginPlay of my GameMode to find an object which is definitely on the map.
But I only get an actor 0-pointer.

Finding it later is no problem. At which point I can be sure everything exists? PostInitializeComponents?

Close please, it was a failure of mine, all actors are there in beginplay