Don't Know Trade (MsgType = Q, FIXML = DontKnowTradeDK)

The Don't Know Trade (DK) (Q) message notifies a trading partner that an electronically received execution has been rejected. This message can be thought of as an execution reject message.

This message has special utility when dealing with one-way execution reporting. If the initial Order Acknowledgment message ( LastQty (32) =0 and OrdStatus (39) =New) does not match an existing order this message can be used to notify the broker of a potential problem order.

Note that the decision to DK an execution lies with the institution. Some of the mismatches listed in the DKReason (127) field may be acceptable and will not require a DK (Q) messages to be generated.

Tag Field Name FIXML Req'd Comments
<Standard Message Header> Y MsgType = Q
37 OrderID @OrdID Y Broker Order ID as identified on problem execution
198 SecondaryOrderID @OrdID2 N
17 ExecID @ExecID Y Execution ID of problem execution
127 DKReason @DkRsn Y
<Instrument> Y
711 NoUnderlyings Undly N Number of underlyings
=> <Underlying Instrument> C Must be provided if Number of underlyings > 0
555 NoLegs Leg N Number of Legs
=> <Instrument Leg> C Must be provided if NoLegs (555) > 0
54 Side @Side Y
<Order Qty Data> Y
32 LastQty @LastQty N Required if specified on the ExecutionRpt (8)
31 LastPx @LastPx N Required if specified on the ExecutionRpt (8)
58 Text @Txt N
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.
<Standard Message Trailer> Y