| Tag | 
                              Field Name | 
                              Req'd | 
                              Comments | 
                           
                           
                              | 555 | 
                              NoLegs | 
                              N | 
                              Number of InstrumentLeg repeating group instances. | 
                           
                           
                              | => | 
                              
                                    Component Block - <InstrumentLeg> | 
                              N | 
                              Must be provided if Number of legs > 0 | 
                           
                           
                              | => | 
                              687 | 
                              LegQty | 
                              N | 
                               | 
                           
                           
                              | => | 
                              690 | 
                              LegSwapType | 
                              N | 
                               | 
                           
                           
                              | => | 
                              
                                    Component Block - <LegStipulations> | 
                              N | 
                               | 
                           
                           
                              | => | 
                              
                                    Component Block - <LegPreAllocGrp> | 
                              N | 
                               | 
                           
                           
                              | => | 
                              564 | 
                              LegPositionEffect | 
                              N | 
                              Provide if the PositionEffect for the leg is different from that specified for the overall multileg security | 
                           
                           
                              | => | 
                              565 | 
                              LegCoveredOrUncovered | 
                              N | 
                              Provide if the CoveredOrUncovered for the leg is different from that specified for the overall multileg security. | 
                           
                           
                              | => | 
                              
                                    Component Block - <NestedParties> | 
                              N | 
                              Insert here the set of  "Nested Parties" (firm identification "nested" within additional repeating group) fields defined in
                                 "Common Components of Application Messages"
                                 Used for NestedPartyRole=Leg Clearing Firm/Account, Leg Account/Account Type
                               | 
                           
                           
                              | => | 
                              654 | 
                              LegRefID | 
                              N | 
                              Used to identify a specific leg. | 
                           
                           
                              | => | 
                              566 | 
                              LegPrice | 
                              N | 
                              Provide only if a price is required for a specific leg. Used for anchoring the overall multileg security price to a specific
                                 leg price.
                               | 
                           
                           
                              | => | 
                              587 | 
                              LegSettlType | 
                              N | 
                              Refer to values for SettlType (63) | 
                           
                           
                              | => | 
                              588 | 
                              LegSettlDate | 
                              N | 
                              Refer to values for SettlDate (64) | 
                           
                           
                              | => | 
                              1017 | 
                              LegOptionRatio | 
                              N | 
                              LegOptionRatio is provided on Covering leg to create a delta neutral spread. In Listed Derivatives, LegDelta LegOptionRatio
                                 is multiplied by LegOptionRatio and OrderQty to determine the covering quantity
                               | 
                           
                           
                              | => | 
                              685 | 
                              LegOrderQty | 
                              N | 
                               |