Imported from previous forum
Can the same institution have different Sender IDs depending on what the TargetID is ?
How are the IDs decided upon ?
Is an ID unique like an email address irrespective of who’s sending to you or who you are sending a message to ?
Or is it like an account number with each entity - if my broker gives me an account number, I have to use that in all communication with him ?
Can someone help with this information or let me know where I can get this information ?
Thanks,
Manu.
SenderCompID and TargetCompID represent the entity (firm) sending or receiving the message. For a given FIX session, these values should be constant. It is possible for firm XYZ to have mulitple FIX sessions with counterparties and use different CompIDs to represent themself over different FIX sessions. The IDs are based upon mutual agreement. Most sellside firms use their Nasdaq broker acronymn if applicable. You can use the SenderSubID and TargetSubID to represent an individual sending or receiving a message if you wish and these values can change during a FIX session.
A FIX session which represents multiple counterparties still has a constant SenderCompID and TargetCompID but the OnBehalfOfCompID and DeliverToCompID values can vary depending upon the firm you are trying to represent. An example of this is in the FIX 4.1 Errata.
>
> Can the same institution have different Sender IDs depending on what the TargetID is ?
>
> How are the IDs decided upon ?
>
> Is an ID unique like an email address irrespective of who’s sending to you or who you are sending a message to ?
>
> Or is it like an account number with each entity - if my broker gives me an account number, I have to use that in all communication with him ?
>
> Can someone help with this information or let me know where I can get this information ?
>
> Thanks,
> Manu.
>