1. The built-in accounts, such as admin, guest, and emscomm, are configured during system installation and cannot be removed.
2. The account to be removed must be an existing local operator account in the system.
3. Only the system administrator (admin), operators with the Administrator level, and operators with the Custom level that are authorized to remove operator's rights can execute this command.
4. If an operator account is removed but an operator is using the account, then the operator logs out unconditionally.