| Tag | Field Name | Req'd | Comments | 
                           
                              | 600 | LegSymbol | N |  | 
                           
                              | 601 | LegSymbolSfx | N |  | 
                           
                              | 602 | LegSecurityID | N |  | 
                           
                              | 603 | LegSecurityIDSource | N |  | 
                           
                              | 604 | NoLegSecurityAltID | N |  | 
                           
                              | => | 605 | LegSecurityAltID | N |  | 
                           
                              | => | 606 | LegSecurityAltIDSource | N |  | 
                           
                              | 607 | LegProduct | N |  | 
                           
                              | 608 | LegCFICode | N |  | 
                           
                              | 609 | LegSecurityType | N |  | 
                           
                              | 764 | LegSecuritySubType | N |  | 
                           
                              | 610 | LegMaturityMonthYear | N |  | 
                           
                              | 611 | LegMaturityDate | N |  | 
                           
                              | 248 | LegCouponPaymentDate | N |  | 
                           
                              | 249 | LegIssueDate | N |  | 
                           
                              | 250 | LegRepoCollateralSecurityType | N | (Deprecated, not applicable/used for Repos) | 
                           
                              | 251 | LegRepurchaseTerm | N | (Deprecated, not applicable/used for Repos) | 
                           
                              | 252 | LegRepurchaseRate | N | (Deprecated, not applicable/used for Repos) | 
                           
                              | 253 | LegFactor | N |  | 
                           
                              | 257 | LegCreditRating | N |  | 
                           
                              | 599 | LegInstrRegistry | N |  | 
                           
                              | 596 | LegCountryOfIssue | N |  | 
                           
                              | 597 | LegStateOrProvinceOfIssue | N |  | 
                           
                              | 598 | LegLocaleOfIssue | N |  | 
                           
                              | 254 | LegRedemptionDate | N | (Deprecated, use YieldRedemptionDate <696> in <YieldData> component block)
                                  | 
                           
                              | 612 | LegStrikePrice | N |  | 
                           
                              | 942 | LegStrikeCurrency | N |  | 
                           
                              | 613 | LegOptAttribute | N |  | 
                           
                              | 614 | LegContractMultiplier | N |  | 
                           
                              | 615 | LegCouponRate | N |  | 
                           
                              | 616 | LegSecurityExchange | N |  | 
                           
                              | 617 | LegIssuer | N |  | 
                           
                              | 618 | EncodedLegIssuerLen | N |  | 
                           
                              | 619 | EncodedLegIssuer | N |  | 
                           
                              | 620 | LegSecurityDesc | N |  | 
                           
                              | 621 | EncodedLegSecurityDescLen | N |  | 
                           
                              | 622 | EncodedLegSecurityDesc | N |  | 
                           
                              | 623 | LegRatioQty | N | Specific to the <InstrumentLeg> (not in <Instrument>)
                                  | 
                           
                              | 624 | LegSide | N | Specific to the <InstrumentLeg> (not in <Instrument>)
                                  | 
                           
                              | 556 | LegCurrency | N | Specific to the <InstrumentLeg> (not in <Instrument>)
                                  | 
                           
                              | 740 | LegPool | N | Identifies MBS / ABS pool | 
                           
                              | 739 | LegDatedDate | N |  | 
                           
                              | 955 | LegContractSettlMonth | N |  | 
                           
                              | 956 | LegInterestAccrualDate | N |  |