Title: Extending an enumeration Colleagues - Does anyone know how to define an XML enumeration type as an extension of a type that is already defined as an enumeration? For example, making xacmlContext:DecisionType an extension of xacml:EffectType with the addition of the "Indeterminate" value. I have tried a few approaches and each seems to be invalid XML schema. All the best. Tim. ----------------------------------------- Tim Moses Tel: 613.270.3183