Variable and VariableType are shown in Figure B.10.

Figure B.10– Variable and VariableType

The DataTypeof a Variableshall be the same as or a subtype of the DataTypeof its VariableType(referred with HasTypeDefinition).

If a HasPropertypoints to a Variablefrom a Base“A” then the following constraints apply:

• The Variable shall not be the SourceNode of a HasProperty or any other HierarchicalReferences Reference.
• All Variableshaving “A” as the SourceNodeof a HasProperty Referenceshall have a unique BrowseNamein the context of “A”.