Account Creation Status: failed
A database owner with the name <account-name> already existsWell, it's a bug in the cPanel system, where some configuration files are not removed by the account-deletion scripts. But, here is the simple solution:
Go to /var/cpanel/databases
Find the following two entries for the terminated (deleted) account name:
Delete these two files.
Now, successfully recreate the terminated account via WHM.