Trade Capture Report Request Ack (MsgType = AQ, FIXML = TrdCaptRptReqAck)

The Trade Capture Request Ack (AQ) message is used to:

Provide an acknowledgement to a Trade Capture Report Request (AD) in the case where the Trade Capture Report Request (AD) is used to specify a subscription or delivery of reports via an out-of-band ResponseTransmissionMethod.
Provide an acknowledgement to a Trade Capture Report Request (AD) in the case when the return of the Trade Capture Reports matching that request will be delayed or delivered asynchronously. This is useful in distributed trading system environments.
Indicate that no trades were found that matched the selection criteria specified on the Trade Capture Report Request (AD)
The Trade Capture Request was invalid for some business reason, such as request is not authorized, invalid or unknown instrument, party, trading session, etc.

NOTE: A Trade Capture Report Request Ack (AQ) is not required if one or more Trade Capture Reports will be returned in-band immediately.

Tag		Field Name	FIXML	Req'd	Comments
<Standard Message Header>				Y	MsgType = AQ
568		TradeRequestID	@ReqID	Y	Identifier for the trade request
1003		TradeID	@TrdID	N
1040		SecondaryTradeID	@TrdID2	N
1041		FirmTradeID	@FirmTrdID	N
1042		SecondaryFirmTradeID	@FirmTrdID2	N
569		TradeRequestType	@ReqTyp	Y
263		SubscriptionRequestType	@SubReqTyp	N	Used to subscribe / unsubscribe for trade capture reports. If the field is absent, the value 0 will be the default
748		TotNumTradeReports	@TotNumTrdRpts	N	Number of trade reports returned
749		TradeRequestResult	@ReqRslt	Y	Result of Trade Request
750		TradeRequestStatus	@ReqStat	Y	Status of Trade Request
<Instrument>				Y	Insert here the set of "Instrument" fields defined in "Common Components of Application Messages".
711		NoUnderlyings	Undly	N	Number of underlyings
=>	<UnderlyingInstrument>			C	Must be provided if Number of underlyings > 0
555		NoLegs	Leg	N	Number of legs. Identifies a Multi-leg Execution if present and non-zero.
=>	<InstrumentLeg>			C	Must be provided if Number of legs > 0
442		MultiLegReportingType	@MLegRptTyp	N	Specify type of multileg reporting to be returned.
725		ResponseTransportType	@RspTransportTyp	N	Ability to specify whether the response to the request should be delivered inband or via pre-arranged out-of-band transport.
726		ResponseDestination	@RspDest	N	URI destination name. Used if ResponseTransportType (725) is out-of-band.
58		Text	@Txt	N	May be used by the executing market to record any execution Details that are particular to that market
354		EncodedTextLen	@EncTxtLen	C	Must be set if EncodedText (355) field is specified and must immediately precede it.
355		EncodedText	@EncTxt	C	Encoded (non-ASCII characters) representation of the Text (58) field in the encoded format specified via the MessageEncoding (347) field.
1011		MessageEventSource	@MsgEvtSrc	N	Used to identify the event or source which gave rise to a message
<Standard Message Trailer>				Y