Appendix D: Order State Change Matrices

E.1.c — Unsolicited replacement of a part-filled order

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   Broker verbally agrees to increase order quantity to 11000
4   Execution(X) Restated New 11000 0 11000 0 Broker signifies that order has been replaced ExecRestatementReason = Verbal
5   Execution(X) Trade Partially Filled 11000 1000 10000 1000 Execution for 1000
6   Broker verbally agrees to increase order quantity to 12000
7   Execution(X) Restated Partially Filled 12000 1000 11000 0 Broker signifies that order has been replaced ExecRestatementReason = Verbal change

This scenario might occur if the buy-side has not implemented order cancel/replace requests or alternatively there is an electronic communication problem at the point that the buy-side wishes to send a cancel replace request

Back to Appendix D: Order State Change Matrices