<xs:attributeGroup name="UnderlyingLegInstrumentAttributes">
<xs:attribute name="Sym" type="UnderlyingLegSymbol_t" use="optional" />
<xs:attribute name="Sfx" type="UnderlyingLegSymbolSfx_t" use="optional" />
<xs:attribute name="ID" type="UnderlyingLegSecurityID_t" use="optional" />
<xs:attribute name="Src" type="UnderlyingLegSecurityIDSource_t" use="optional" />
<xs:attribute name="CFI" type="UnderlyingLegCFICode_t" use="optional" />
<xs:attribute name="SecType" type="UnderlyingLegSecurityType_t" use="optional" />
<xs:attribute name="SubType" type="UnderlyingLegSecuritySubType_t" use="optional" />
<xs:attribute name="MMY" type="UnderlyingLegMaturityMonthYear_t" use="optional" />
<xs:attribute name="MatDt" type="UnderlyingLegMaturityDate_t" use="optional" />
<xs:attribute name="MatTm" type="UnderlyingLegMaturityTime_t" use="optional" />
<xs:attribute name="StrkPx" type="UnderlyingLegStrikePrice_t" use="optional" />
<xs:attribute name="OptAt" type="UnderlyingLegOptAttribute_t" use="optional" />
<xs:attribute name="PutCall" type="UnderlyingLegPutOrCall_t" use="optional" />
<xs:attribute name="Exch" type="UnderlyingLegSecurityExchange_t" use="optional" />
<xs:attribute name="Desc" type="UnderlyingLegSecurityDesc_t" use="optional" />
</xs:attributeGroup>
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