<xs:group name="TradingSessionListUpdateReportElements"> <xs:sequence> <xs:element name="ApplSeqCtrl" type="ApplicationSequenceControl_Block_t" minOccurs="0" /> <xs:element name="TrdSessLstGrp" type="TrdSessLstGrp_Block_t" maxOccurs="unbounded" /> </xs:sequence> </xs:group>