[Quickfix-users] About "ClOrdID" and "OrigClOrdID"

[DA S. A. <ada...@ca...>]

Hi,

I would like to known the use of the fields 11(ClOrdID) and 41(OrigClOrdID).

1) I receive a "SingleOrder" msg with ClOrdID=ID1
2) I receive a "CancelReplace" (modify) msg with ClOrdID=ID2  & 
OrigClOrdID=ID1,
3) I receive a "CancelReplace" (modify) msg with ClOrdID=ID3  & 
OrigClOrdID=?????.

The second msg means that the pair wants to modify the order having the 
initial ID1.

If I reject the msg (2), what value can I receive in OrigClOrdID in next 
msgs like (3)?
ID2 (previous order) or ID1 (initial order)?
And what happens if I accept the msg (2) for the OrigClOrdID?

The FIX documentation is not clear, it says for OrigClOrdID :
""ClOrdID <11> <tagNum_11.html> of the previous order (NOT the initial 
order of the day) as
assigned by the institution, used to identify the previous order in 
cancel and
cancel/replace requests.""

Thanks.