I've check in quickfix c++ 4.4 dictionary and the value also exists.

By the way, how do you generate the dictionary files? In the FIX repository, the xml format is very different (lots of xml distinct files)?

This is trivial to fix, but priority is high, not trivial. This leads rejection messages not being delivered correctly to applications and incorrect rejections of the rejection messages delivered to the other party.

In other words, it causes a mess.

I guess the priority was set to trivial because there is an easy workaround: just add the tag to the data dictionary yourself.