What versions of the FIX protocol do B2BITS engines support?
All of our commercial engines (Java, C++ and .NET) support FIX versions 4.0, 4.1, 4.2, 4.3, 4.4, 5.0, 5.0 SP1 and FAST 1.1. As part of the support and upgrade package which all our Clients have, we supply upgrades to newer versions of the protocol at no extra charge. This ensures your implementation stays abreast of new developments as they occur, without any extra cost.