If object names begin with an underscore (_) or a number (0-9) or have special characters (e.g. *,%,+) or spaces in them, then they must be enclosed in single quotes ' ' in rules and tables.
Object names may not contain a forward slash /.
Also, two objects cannot have the same name.
When naming your objects, we recommend you start with a letter and not use
special characters or spaces. This allows you to use the object names in your
rules and tables without surrounding them with single quotes.