When you generate an IS document type from an XML schema definition that contains derived types and you select the
Generate document types for complex types option,
Integration Server creates an IS document type for the base type and one for each derived type. If you also select the
Register document types with schema type option,
Integration Server registers the generated IS document types with the XML schema types. For more information about derived types, see
Derived Types and IS Document Types. For more about registration, see
Registering Document Types with Their Schema
Types.