Cannot add domain - It states that it exists!

[tsouts]

Hi, I try to add a my domain on a fresh installation, I followed the instructions in this section "[Tutorial] How to configure your server", and I get the following error from CWP although it does not as I checked in the List Domains tab
Any ideas?

WARNING! Domain surrogate.gr already exists on the server!

[tsouts]

I found a solution but i do not know if its the correct one.
I created a user with the domain "srv1.domain.com". Then I created the domain "domain.com" successfully.
Is this a correct process?