Using the EMS Administration Tool : Naming Conventions

Naming Conventions
These rules apply when naming users, groups, topics or queues:
$ is illegal at the beginning of the queue or topic names—but legal at the beginning of user and group names.
Space characters are permitted in a description field—if the entire description field is enclosed in double quotes (for example, "description field").
Both * and > are wildcards, and cannot be used in names except as wildcards.
For more information about wildcards, see Wildcards.
Dot separates elements within a destination name (foo.bar.*) and can be used only for that purpose.
Name Length Limitations
The following length limitations apply for these parameter names:
Passwords — cannot exceed 4096 characters. This length limitation applies to passwords used by the tibemsd to authenticate connecting clients or servers.