| Every workflow engine has a globally unique key. This key
may be used in environments with several workflow
engines to uniquely identify an instance. Note that this key should
be bound to the data (state) of an engine, not to a deployment address.
If an engine is moved to a different machine, but continues using
the same data (i.e. all running processes remain the same etc.) then
it should still provide the same instance key.
the unique instance key |