| TargetPtysSubGrp | 3 fields, 1 group |
| ThrottleMsgTypeGrp | 2 fields, 1 group |
| ThrottleParamsGrp | 6 fields, 1 group, 1 nested component |
| ThrottleResponse | 3 fields |
| TickRules | 8 fields, 1 group |
| TimeInForceRules | 2 fields, 1 group |
| TradeAllocAmtGrp | 6 fields, 1 group |
| TradeCapLegUnderlyingsGrp | 1 field, 1 group, 1 nested component |
| TradePositionQty | 7 fields, 1 group |
| TradePriceConditionGrp | 2 fields, 1 group |
| TradeQtyGrp | 3 fields, 1 group |
| TradeReportOrderDetail | 33 fields, 5 nested components |
| TradingSessionRules | 6 nested components |
| TradingSessionRulesGrp | 3 fields, 1 group, 1 nested component |
| TransactionAttributeGrp | 3 fields, 1 group |
| TrdAllocGrp | 30 fields, 1 group, 4 nested components |
| TrdCapDtGrp | 4 fields, 1 group |
| TrdCapRptAckSideGrp | 69 fields, 1 group, 14 nested components |
| TrdCapRptSideGrp | 89 fields, 1 group, 18 nested components |
| TrdCollGrp | 3 fields, 1 group |
| TrdgSesGrp | 3 fields, 1 group |
| TrdInstrmtLegExecGrp | 16 fields, 1 group, 1 nested component |
| TrdInstrmtLegGrp | 33 fields, 1 group, 6 nested components |
| TrdMatchSideGrp | 49 fields, 1 group, 4 nested components |
| TrdRegPublicationGrp | 3 fields, 1 group |
| TrdRegTimestamps | 13 fields, 1 group |
| TrdRepIndicatorsGrp | 3 fields, 1 group |
| TrdSessLstGrp | 23 fields, 1 group, 1 nested component |
| TriggeringInstruction | 16 fields |
| UnderlyingAdditionalTermBondRefGrp | 19 fields, 1 group |