R857

R857 / 1:Mc

Instance Destination directs signals to exactly one Instance Flow

Instance Flow receives signal at zero, one or many Instance Destination

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A Signal delivered to an Instance Destination results in a distinct copy of the Signal sent to each Instance in the Instance Flow. If there are zero instances in the flow, no Signals are dispatched and the Signal Action completes normally.

An Instance Flow may or may not provide a set of Instances as Signal receivers. There are many other possible consumers of such a flow.

Now the same Instance Flow could provide a set of Single receiving Instances for multiple Instance Destinations. In such a case you can imagine an Instance Flow branching as input to more than one Signal Action.

Formalization

Instance Destination.(Instance flow, Activity, Domain) -> Instance Flow.(Name, Activity, Domain)