| Tag | Field Name | Req'd | Comments | 
                           
                              | Component Block - <StandardHeader> | Y | MsgType = AD | 
                           
                              | 568 | TradeRequestID | Y | Identifier for the trade request | 
                           
                              | 569 | TradeRequestType | Y |  | 
                           
                              | 263 | SubscriptionRequestType | N | Used to subscribe / unsubscribe for trade capture reports       If the field is absent, the value 0 will be the default (snapshot only - no subscription) | 
                           
                              | 571 | TradeReportID | N | To request a specific trade report | 
                           
                              | 818 | SecondaryTradeReportID | N | To request a specific trade report | 
                           
                              | 17 | ExecID | N |  | 
                           
                              | 150 | ExecType | N | To requst all trades of a specific execution type | 
                           
                              | 37 | OrderID | N |  | 
                           
                              | 11 | ClOrdID | N |  | 
                           
                              | 573 | MatchStatus | N |  | 
                           
                              | 828 | TrdType | N | To request all trades of a specific trade type | 
                           
                              | 829 | TrdSubType | N | To request all trades of a specific trade sub type | 
                           
                              | 830 | TransferReason | N | To request all trades for a specific transfer reason | 
                           
                              | 855 | SecondaryTrdType | N | To request all trades of a specific trade sub type | 
                           
                              | 820 | TradeLinkID | N | To request all trades of a specific trade link id | 
                           
                              | 880 | TrdMatchID | N | To request a trade matching a specific TrdMatchID | 
                           
                              | Component Block - <Parties> | N | Used to specify the parties for the trades to be returned (clearing firm, execution broker, trader id, etc.)       ExecutingBroker       ClearingFirm       ContraBroker       ContraClearingFirm       SettlementLocation - depository, CSD, or other settlement party       ExecutingTrader       InitiatingTrader       OrderOriginator | 
                           
                              | Component Block - <Instrument> | N | Insert here the set of  "Instrument" (symbology) fields defined in "Common Components of Application Messages" | 
                           
                              | Component Block - <InstrumentExtension> | N | Insert here the set of  "InstrumentExtension" fields defined in "Common Components of Application Messages" | 
                           
                              | Component Block - <FinancingDetails> | N | Insert here the set of  "FinancingDetails" fields defined in "Common Components of Application Messages" | 
                           
                              | Component Block - <UndInstrmtGrp> | N |  | 
                           
                              | Component Block - <InstrmtLegGrp> | N |  | 
                           
                              | Component Block - <TrdCapDtGrp> | N | Number of date ranges provided  (must be 1 or 2 if specified) | 
                           
                              | 715 | ClearingBusinessDate | N | To request trades for a specific clearing business date. | 
                           
                              | 336 | TradingSessionID | N | To request trades for a specific trading session. | 
                           
                              | 625 | TradingSessionSubID | N | To request trades for a specific trading session. | 
                           
                              | 943 | TimeBracket | N | To request trades within a specific time bracket. | 
                           
                              | 54 | Side | N | To request trades for a specific side of a trade. | 
                           
                              | 442 | MultiLegReportingType | N | Used to indicate if trades are to be returned for the individual legs of a multileg instrument or for the overall instrument. | 
                           
                              | 578 | TradeInputSource | N | To requests trades that were submitted from a specific trade input source. | 
                           
                              | 579 | TradeInputDevice | N | To request trades that were submitted from a specific trade input device. | 
                           
                              | 725 | ResponseTransportType | N | Ability to specify whether the response to the request should be delivered inband or via pre-arranged out-of-band transport. | 
                           
                              | 726 | ResponseDestination | N | URI destination name.  Used if ResponseTransportType is out-of-band. | 
                           
                              | 58 | Text | N | Used to match specific values within Text fields | 
                           
                              | 354 | EncodedTextLen | N |  | 
                           
                              | 355 | EncodedText | N |  | 
                           
                              | 1011 | MessageEventSource | N | Used to identify the event or source which gave rise to a message | 
                           
                              | 1003 | TradeID | N |  | 
                           
                              | 1040 | SecondaryTradeID | N |  | 
                           
                              | 1041 | FirmTradeID | N |  | 
                           
                              | 1042 | SecondaryFirmTradeID | N |  | 
                           
                              | 1123 | TradeHandlingInstr | N |  | 
                           
                              | Component Block - <StandardTrailer> | Y |  |