Imported from previous forum
[ original email was from Ed Teng - e.teng@crossbordex.com ]
When moving from 4.1 to 4.2, there have been numerous Reuters Exchange Codes (REX) added and deleted. So, if a client and broker are communicating under 4.1, and they choose to use a market code that is no longer valid in 4.2 (such as AL - Alberta Stock Exchange), will the order/trade still be valid? Or will the client’s OMS perform a lookup from the most recent REX list and kick out this code before submitting the order?
Conversely, if a new code has been added to the REX list in 4.2 (such as BY - Beirut Stock Exchange), will a client and broker communicating under 4.1 be able to use that REX code or are they confined to the set REX codes located in Appendix C?
Thanks!
Ed