These are used for setting business specific constants and can be overridden for an Organization Unit.
If there is no override value for Org Unit, the returned value will be the default value.
So how do these work?
Can be used to avoid re-invoke of activity in case of rollback
Here is a simple example of this new functionality.
To begin, here is my composite - write an order to a file and then the orderNr to the DB.