Appendix D: Order State Change Matrices

C.1.b — Part-filled order, followed by cancel/replace request to increase order qty, execution occurs whilst order is pending replace

Time Message Received (ClOrdID, OrigClOrdID) Message Sent (ClOrdID, OrigClOrdID) Exec Type OrdStatus Order Qty Cum Qty Leaves Qty Last Qty Comment
1 New Order(X)       10000        
2   Execution(X) Rejected Rejected 10000 0 0 0 If order is rejected by sell-side (broker, exchange, ECN)
2   Execution(X) New New 10000 0 10000 0  
3   Execution(X) Trade Partially Filled 10000 1000 9000 1000 Execution for 1000
4 Replace Request(Y,X)       12000       Request increase in order quantity to 12000
5   Cancel Reject (Y,X)   Partially Filled         If request is rejected
5   Execution (Y,X) Pending Replace Pending Replace 10000 1000 9000 0 "Pending replace" order status takes precedence over "partially filled" order status
6   Execution(X) Trade Pending Replace 10000 1100 8900 100 Execution for 100 before cancel/replace request is dealt with
7   Cancel Reject (Y,X)   Partially Filled         If request is rejected
7   Execution (Y,X) Replace Partially Filled 12000 1100 10900 0 Confirm replace has been accepted
8   Execution(Y) Trade Filled 12000 12000 0 10900 Execution for 10900

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