--- title: DontKnowTradeDK message – FIX 5.0 SP2 – FIX Dictionary – Onix Solutions description: DontKnowTradeDK message – FIX 5.0 SP2 – FIX Dictionary – Onix Solutions --- ![Dictionary icon](https://www.onixs.biz/hubfs/SIC_website_2020/images/interface/img-icon-book.svg) # DontKnowTradeDK message – FIX 5.0 SP2 – FIX Dictionary | Messages by MsgType \| Messages by Name \| Fields by Tag \| Fields by Name \| FIX 5.0 SP2 \| Home FIX 5.0 SP2 : DontKnowTradeDK message Structure \| Related Messages Description The Don't Know Trade (DK) 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 (Execution Report with 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 messages to be generated. Structure Tag Field Name Req'd Comments Component Block - Y MsgType = Q 37 OrderID Y Broker Order ID as identified on problem execution 198 SecondaryOrderID N 17 ExecID Y Execution ID of problem execution 127 DKReason Y Component Block - Y Insert here the set of "Instrument" (symbology) fields defined in "Common Components of Application Messages" Component Block - N Number of underlyings Component Block - N Number of Legs 54 Side Y Component Block - Y Insert here the set of "OrderQtyData" fields defined in "Common Components of Application Messages" 32 LastQty N Required if specified on the ExecutionRpt 31 LastPx N Required if specified on the ExecutionRpt 58 Text N 354 EncodedTextLen N Must be set if EncodedText field is specified and must immediately precede it. 355 EncodedText N Encoded (non-ASCII characters) representation of the Text field in the encoded format specified via the MessageEncoding field. Component Block - Y Related Messages | | --- | | ![](https://www.onixs.biz/fix-dictionary/img/spacer.gif?height=5&name=spacer.gif) | - Follow OnixS - [Follow us on Twitter ](https://twitter.com/onixsbiz) - [Connect with us on LinkedIn ](https://www.linkedin.com/company/onix-solutions/) We track how people interact with our online web content and resources, and some of that tracking involves storing cookies on your device. By continuing to use our site you accept that you agree to this. For more details see our [Cookie usage, and Data Privacy and Protection Policies](https://www.onixs.biz/cookies-and-privacy.html). [Ok](https://www.onixs.biz/fix-dictionary/5.0.sp2/msgtype_q_81.html#) [OnixS ](https://www.onixs.biz/) Menu --- --- [OnixS ](https://www.onixs.biz/) ### Search the site Search