Model Validation works against a set of validation rules, arranged in the following groups:
|·||(Element, Relationship, Feature, Diagram): Well-Formedness|
Checks whether or not an Element, Relationship, Feature or Diagram is well-formed. This group of rules includes checks such as whether the item is a valid UML item and whether a diagram contains valid elements within it
Checks whether or not a UML Element contains valid children, whether it contains the right number of valid children, and whether or not the element is missing any required children
|·||(Element, Relationship, Feature): Property Validity|
Checks whether or not the item has the correct UML properties defined, and whether the properties contain incorrect or conflicting values; for more information on these properties see the Custom Properties topic
|·||(Element, Relationship, Feature): OCL Conformance|
Validates an item against any defined constraints in OCL.