In an Instance, the type of an instanciated Attribute must be part of the instanciated class or one of its parent classes.


The related Attribute of an AttributeLink must be owned by:

  • the Classifier typing the Instance
  • one of the parent Classifiers of the Classifier typing the Instance


If you have a slot related to an attribute that is not accessible from the instance’s classifier, you should either:

  • Change the related attribute to one of the classifier’s attributes
  • Make the attribute accessible to the classifier, by adding an inheritance link for example