I am getting an error on VA Code 20-Amount (TP). It says I need to fix it. It is 0 and it tell me it needs to be blank. I delete it, I get an error, it's 0 I get error?

Pass through Entity Tax add back. It is 0. The cell is highlighted with a 0 in it. It tells me it needs to be blank. SO I delete the 0 and it tells me there is an error. I leave the 0 and there is an error. NO CREDIT is being claimed - it should be blank or 0 but doing either of those sends me right back to an error and tells me I need to fix it.