Do we really need two execution reports for IOC and FOK order, one is accepted message and the other one is canceled message?

, ,
1

Imported from previous forum

2

You only need this level of verbosity if you are using legacy FIX versions (4.x). Have a look at EP188 Application Level Optimization (https://www.fixtrading.org/packages/ep188/) which shows workflow optimizations to reduce overall message volume.