BACM — The BACM metamodel does not have a domain of individuals

This issue arises from the resolution of BACM-45 and BACM-43. Taken together these proposals create an interpretation of the BACM model elements that does not syntactically distinguish elements representing sets from elements representing individuals. Rather, it represents individuals by an OCL constraint that allows only a single model element to have a given metaclass. This solution works for the only case in the current BACM spec, but does not resolve the underlying issue of the inability to represent individuals and make assertions about them.

Resolution requires substantial change to the BACM metamodel

Implementing a domain of individuals and assertions (e.g. OWL 2) would require adding many more classes and associations to the metamodel with consequences unanalyzed at this time.