Unable to create sub domain; WARNING! "already exist in database"

Hello,

Cronology:
(1) I used to create an account "account1" with domain "sample-account1.com"
(2) Cause I have a problem, can not solve, I try to delete the account,
(3) then I create again with "account2" and rebuild virtualhost

Problem:
When I was going to create sub domain "subdomain.sample-account.com" shows error message like this:
WARNING! SubDomain subdomain.sample-account.com already exists in database!

Anybody know the issue?

Thanks.

Hi, check virtual hosts file (/usr/local/apache/conf.d/vhosts.conf)

Hi Igor, thank you very much.

(1)what should we check in the file?
(2)what should we edit in the file?

Thanks again.

Hi Igor, thank you very much.

(1)what should we check in the file?
(2)what should we edit in the file?

Thanks again.

Check duplicate entries (you domain you are planning to add in) in your vhost file