UPDM — SystemsNode/ SystemsNodeElements

· MODAF/ NAF does not contain a system node concept and the question is whether a more applicable concept here would not be CapabilityConfiguration. The statement that a system node would be equivalent to PhysicalAsset in MODAF is not correct. If however there is a hidden assumption that a systems node has to be in a single location, then Capability configuration is broader since this would not be a requirement.
· It is considered questionable whether the association extension is really required. A CapabilityConfiguration (to use a MODAF/ NAF term) would be visualised as a composite class diagram and the entities would thus turn up as connected to the surrounding entity without the need of a specific association.