UML14 — UML 2 Super/Metamodel::StructuredClasses/erroneous association

Package StructuredClasses contains class Class and an association +:Class ->+ownedAttribute:InternalStructures::Property which does not appear on any diagram. This association does not match the similar one in Constructs: +class:Class <->+ownedAttribute:Property because it is missing an end name and navigability in both directions. It is not clear if this was intended to constrain the Constructs association so that a property does not know the class that contains it, or if the association was meant to be deleted. It cannot simply be corrected by adding the missing end and making it navigable in both directions as this would result in Property having two properties called class. Either the association should be removed, or StructuredClasses needs to redefine Property instead of referencing it directly from InternalStructures

see above