Question Not able to create "admin." subdomain

[Riddle]

Hi,

I have created a "domain.com" domainname. When I try to add a "admin.domain.com" subdomain above it, it says "A domain with such a name already exists." I can add other subdomains without issue, also "admin2.domain.com"

I also cannot add "admin.domain.com" as a normal domain, says the same.

Is there a list of prohibited subdomains I can use?

 

[IgorG]

Make sure that you have not DNS record with such a name:

# plesk db
> select dns_zone_id,host from dns_recs where host like "%admin.domain.com%";

If dns_zone_id will be found, you can find related domain with:

> select id,name from dns_zone where id=XX;

 

[Riddle]

Oh, I see... I created a customer with some domains with the trial license. After that, I ordered a Web Admin license and the customer and registered domains were gone. Now I had to upgrade the license.

Maybe a nice suggestion to have this simplified somehow
Thank you