<xs:attributeGroup name="DerivativeInstrumentPartiesAttributes"> <xs:attribute name="ID" type="DerivativeInstrumentPartyID_t" use="optional" /> <xs:attribute name="Src" type="DerivativeInstrumentPartyIDSource_t" use="optional" /> <xs:attribute name="R" type="DerivativeInstrumentPartyRole_t" use="optional" /> </xs:attributeGroup>