Form7203 only has data in box35a and47a?Schedule E is not checked for basis.Do boxes 16 and box 21 need data? what box is the difference on 1120S? Turbotax apparoved asis

Turbotax did the final check and said I was good to go with data only in box 35a and 47a on form 7203. Schedule E does not have box checked for basis. If I have to fill in 16 and 21, where on 1120 do I find the difference.