Requirements for naming users, groups, and roles
When you name your users, groups and roles, you must meet the naming requirements.
The naming requirements are as follows:
Names are case insensitive.
Names can contain any alphanumeric character, a space, or a symbol that is not one of the following characters:
" * + , / \: ; < = > ? |[ ]
Note:
If the name contains spaces or special characters, enclose the name in double quotes (" ") when you use it in a command.
You cannot give a user and a group the same name.
Parent topic:
Reasons for creating administrator accounts