Illegal Sub?

[blueump]

I need a little help on this one, so if you have your rule book in front of you (which I dont) could you please site the rule:

Last night's FED game. Home team is at bat...they have the official book. Player #14 had entered the game in the top of the inning playing first base (defensively), and now she steps to the bat. She walks.

When she gets to first, the visiting coach calls time and claims that she was an illegal batter because the home team didn't report her as a substitute. The home plate umpire checks his line-up and agrees. (The home team claims to have reported her as one of four defensive changes in the top of the inning...but the PU only recorded 3 of the changes on his lineup card)

Despite that...he calls the girl out at first (tying run on 3rd - 2 out previously) and ends the inning.

Now, since the home scorer had the change recorded in their book, is this an illegal sub or not? What is the rule/consequences for unreported subs in FED ball?