Experiencing the following issue trying to delete a domain in your cPanel account?
The subdomain hostname_domain.tld does not correspond to domain.tld.
Have a look if the domain isn’t listed in “Addon Domains” or “Alias”. If the domain show up in either of those category, try deleting from there first.
In this case, it turned out that the domain was added as “Addon Domain”, deleting in that category worked out and is no longer listed in “Domains”.