EDOC — Chapter 3, 3.19 "Metamodel", 3.19.1 "Business Process metamodel"

The use of ProcessRoles is under-specified.

1. Specifically, there is no description of how data received by
ProcessPortConnectors is made available to a ProcessComponent instance
bound to a Performer ProcessRole. This is especially problematic for
Performer ProcessRoles since this is where the model should "bottom
out".

2. Additionally, there is no description of how a ProcessComponent
instance bound to an Artifact or ResponsibleParty ProcessRole is made
available to its Activity's ProcessComponent instance.

Suggested Resolution:

1. Add text describing how one can use a Connection to connect a
ProcessPortConnector of an Activity to a PortUsage of a (Performer)
ProcessRole.

2. Add text describing how a PropertyValue can be attached to an
Activity with a "value" Expression referencing an associated Artifact
or ResponsibleParty ProcessRole and its "fills" association pointing
at an appropriate PropertyDefinition of the Activity's ProcessComponent.