<xs:group name="InstrmtLegIOIGrpElements"> <xs:sequence> <xs:element name="Leg" type="InstrumentLeg_Block_t" minOccurs="0" /> <xs:element name="Stip" type="LegStipulations_Block_t" minOccurs="0" maxOccurs="unbounded" /> </xs:sequence> </xs:group>