You should avoid using the following special characters when naming objects in CloudBees Flow. These characters have special purposes or meanings within CloudBees Flow or in the scripting language being used.
Used for absolute property paths in CloudBees Flow. The path syntax is similar to a file system path specification.
Might cause problems when used in job names. Some operating systems do not allow directories containing this character.
Used for escaping.
Might cause issues when used in user names (such as in a list of approvers).