Singleton Class
The sys:singleton system schema class allows you to run actions or rules a single time.
Any action or rule logic written against the singleton class will run only once. This can be useful for a number of tasks e.g Initialising a session scoped temporary value (for more on temporary values, please see Values).
Note: To use the sys:singleton class, make sure the Use system schema toggle is on.
The singleton class in sys: class list
Note: The sys:singleton classes have no attributes and you will not be able to run a report on the class.



