If Kraken needs to reject a message before it reaches the Trading engine and gets an OrderID, the order or cancellation will be rejected using a Business level reject.Documentation Index
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35=
jSequence number of the rejected message.
The MsgType
35 of the FIX message being referenced.The value of the ClOrdID field on the message being rejected.
Code to identify reason for a Business Message Reject message.Possible values:
0: Others1: Unknown ID2: Unknown Instrument3: Unsupported Message Type4: Application not available5: Conditionally Required Field Missing6: Not Authorized101: Unknown order104: Order too old
Full description for rejection.