Validation Rules UML validation rules UML completeness constraints rules Current: No Stereotype Metaclass No Stereotype Metaclass AbbreviationMtClsForStrDescriptionThis validation rule checks if a Stereotype has a Metaclass.SeverityerrorConstrained ElementStereotypeSolversTo fix this, make sure a Stereotype has a Metaclass.ExampleStereotype Activation does not have a Metaclass specified. The error is resolved by specifying a Metaclass. ×