I'm a couple years after this was posted, but it's still an issue. I was frustrated as I'm using 2022 Home & Business version and I couldn't figure out the cause and my screen didn't match the "trash can" explanation below.
Instead, I found the problem mostly to be user error by switching to Forms view so I could see Sch C. I had used two lines to describe a Misc Expense Other... the 2nd line was just further explanation, but any entry on the form in the description (first) column necessitates something in the 2nd column (dollars), and zero (0) wouldn't cut it.
To solve, I made sure I had no extra or blank lines on the form. Two entries? Description on rows 1 and 2. Then for the amount I went to the Cmd-I submenu, made sure to check the Don't Print option and entered the amount and my extra lines of explanation. I confused myself since I use this Cmd-I screen A LOT throughout the program to leave myself careful notes on exactly where the amount comes from so I'm not sweating bullets if I need to confirm in the future. (It also helps the following year to include anything tricky that was hard-earned knowledge.
After cleaning up the formal Sch C and moving my notes to the "amount" Cmd-I subform, the program was happy and I was happy so I could push the button and submit.
