Time Message Received (ClOrdID, OrigClOrdID) Message Sent (ClOrdID, OrigClOrdID) Exec Type OrdStatus Order Qty Cum Qty Leaves Qty Last Qty Comment
1 Cancel Request(Y,X) 10000
2 Cancel Reject (Y,X) Rejected Cancel request rejected with reject reason of "Unknown Order", OrdStatus is "Rejected" and OrderID is "NONE"

NOTE: It is important to note that rejecting a cancel request for an unknown OrigClOrdID does not cause the sell-side to consume the OrigClOrdID used in the Cancel Request.