iLink Disabled IFM Cancel-Replace

The following example illustrates the message flow for a client using the disabled IFM Cancel/Replace functionality.

When customers send the Order Cancel/Replace Request (tag 35-MsgType=G) message, they must populate it with the quantity that they want to be open in the market, irrespective of the amount that has been previously filled.

1. The client sends a New Order (tag 35-MsgType=D) message to CME Globex.
    

   • (tag 38-OrderQty = 15)
      

2. CME Globex responds with an Execution Report – Order Confirmation (tag 35-MsgType=8) message.
    

   • (tag 38-OrderQty = 15, tag 151-LeavesQty = 15)
      

3. CME Globex sends an Execution Report – Partial Fill (tag 35-MsgType=8) message.
    

   • (tag 38-OrderQty = 15, tag 32-LastShares = 2, tag 151-LeavesQty = 13)
      

4. The client sends a Cancel/Replace Request (tag 35-MsgType=G) message to change the quantity.
    

   • (tag 38-OrderQty = 10)
      

5. CME Globex responds with an Execution Report – Cancel/Replace Confirmation (tag 35-MsgType=8) message.
    

   • (tag 38-OrderQty = 10, tag 151-LeavesQty = 10)
      

6. CME Globex sends an Execution Report – Fill (tag 35-MsgType=8) message.
    

   • (tag 38-OrderQty = 10, tag 151-LeavesQty = 0, tag 32-LastShares = 10)
      

The following table provides a summary of the quantities associated with the previous example.