2. The method of claim 1 , wherein the intermediary data structure defines elements or attributes of a mandatory data type in the context of a specific service operation.
2. The method of claim 1 , wherein the intermediary data structure defines elements or attributes of a mandatory data type in the context of a specific service operation. 3. The method of claim 2 , wherein the intermediary data structure uses an XML query language for constraints and enforces context specific constraints on data types in the XML schema.