# Name Length Limitations

The following length limitations apply for these parameter names:

- Destination name — cannot exceed 249 characters. For more information on topic and queue naming conventions, see Destination Name Syntax.
- Username — cannot exceed 255 characters. The `username` parameter is described in `users.conf`.
- Group name — cannot exceed 255 characters. The `group-name` parameter is described in `groups.conf`.
- Client ID — cannot exceed 255 characters.
- Connection URL — cannot exceed 1000 characters.
  Note: For more information on Client ID and Connection URL, see factories.conf.
- Passwords — cannot exceed 4096 characters. This length limitation applies to passwords used by the `tibemsd` to authenticate connecting clients or servers.

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