This note is probably coming up when you when run the federal review. During the interview part of filling out your vehicle expenses, you should have been asked "Was your "car" used for hire?" And you would have needed to answer simply Yes or No. Likely you either skipped over this question by accident or, for some glitch reason, the software did not record it properly. In any event, since the federal review seems to have caught it, all you have to do is answer either "yes' or "no" when prompted in the review. If "no," that is all; if "yes", then there will be follow-up questions.