Proposal for Order Modify

Imported from previous forum

[ original email was from Matthew Lavicka - ]
After taking a look at some of the discussion that has been going on about partial cancels, I feel the need to propose adding an Order Modify transaction. A Cancel/Replace is to be used in those cases when the field that is being changed causes a new order ID to be assigned. A Modify is to be used when the changing field does not require a new order ID. All that is required for us to implement these two commands is to agree upon which fields fall into which category. As a starter here is a suggestion:

Cancel/Replace:

  • Increasing Order Quantity
  • Perhaps some of the Order Instructions and Order Handling

Modify:

  • Decreasing Order Quantity (i.e. Partial Cancel)
  • Changing booking information

Does this proposal help us achieve a comprimise on the partial cancel issue or does it bring up further complications? Since I am not involved in the details I thought I’d toss this one out there for discussion.