Error from park wrapper: hostingcomments.com is owned by another user.

Removed Entry from httpd.conf The subdomain, hostingcomments.abc.com has been removed.
It means you have previously added and removed same domain from your cpanel but that time domain was not properly removed from server. You have to check following configuration files on server, if addon domains entries already exist in those files remove it manually.

/var/cpanel/users/cpanel-username
/usr/local/apache/conf/httpd.conf checks virtual host entry for addon domain.
/etc/named.conf
/var/named/domainname.com.db if this file is exists then removes it.