I don't think that's ever been a problem with Sony sets.

It's possible they've re-named them again (depending on model year they sometimes equate codes with numbered inputs, and sometimes codes with types of inputs).

Or, they simply forgot to add them. That's happened quite a few times in the past, even when they were still designing and building most of their stuff and not farming it out. Be sure you have the latest firmware version (I remember Philips TVs were notorious for not supporting discretes out of the box, but where fine in later revisions).