<xs:attributeGroup name="AdvertisementAttributes" >
  <xs:attribute name="AdvId" type="AdvId_t" use="required"/>
  <xs:attribute name="AdvTransTyp" type="AdvTransType_t" use="required"/>
  <xs:attribute name="AdvRefID" type="AdvRefID_t" use="optional"/>
  <xs:attribute name="AdvSide" type="AdvSide_t" use="required"/>
  <xs:attribute name="Qty" type="Quantity_t" use="required"/>
  <xs:attribute name="QtyTyp" type="QtyType_t" use="optional"/>
  <xs:attribute name="Px" type="Price_t" use="optional"/>
  <xs:attribute name="Ccy" type="Currency_t" use="optional"/>
  <xs:attribute name="TrdDt" type="TradeDate_t" use="optional"/>
  <xs:attribute name="TxnTm" type="TransactTime_t" use="optional"/>
  <xs:attribute name="Txt" type="Text_t" use="optional"/>
  <xs:attribute name="EncTxtLen" type="EncodedTextLen_t" use="optional"/>
  <xs:attribute name="EncTxt" type="EncodedText_t" use="optional"/>
  <xs:attribute name="URL" type="URLLink_t" use="optional"/>
  <xs:attribute name="LastMkt" type="LastMkt_t" use="optional"/>
  <xs:attribute name="SesID" type="TradingSessionID_t" use="optional"/>
  <xs:attribute name="SesSub" type="TradingSessionSubID_t" use="optional"/>
</xs:attributeGroup>