If I inadvertently marked vehicle sold, how do I change it to not sold? I'm self employed and was entering the information in the "vehicle section" of wages & income.

I've unchecked the box for vehicle sold, but in the review section it claims errors and wants a date sold. Also in the review section it says other boxes are not checked like " vehicle for personal use" and "available for use during off duty hours" and others that I have already checked the box.