systemctl isolate Leap


i am completely new to OpenSuse Leap. I installed 42.2 and am testing with targets. I noticed that doesnt work, no error, nothing happens.
the user i logged in with is root in the cli. Am using command
systemctl isolate

Anyone who can help a newbee with something that might be very easy?

Hi, welcome.

Eh, you tagged your post as 42.3, yet you write 42.2 . Which one is it?

Furthermore it might be better if you added what you’re trying to achieve.