Section 179 Carryovers Help Please!!!

I’ve been doing my taxes all day and I am about to file my federal return but turbotax wont let me until I fix a mistake. I’m unbelievably frustrated right now. The problem is section 179 carryovers line 24. The error says "The total section 179 carryover shown here does not match the sum of the section 179 carryover shown on each individual activity". Can someone please explain to me in plain english how I come up with the correct number? It won’t even allow me to change the number that’s either in the box at the top, or in the actual forms below. Any insight is extremely appreciated!!!!