I am reviewing the tax forms and it came up as "Check This Entry" "IT-201-X Pg 1-2 -- IT-201-X Pg 5-6: Fed Change Desc - Line a must be entered. 86 List federal changes

Are you amending your New York return?   Sounds like you are being asked to type in a reason why you are amending......  Are you using TurboTax Online?   If you are using desktop, switch to Forms Mode (click on Forms in the upper right corner) and go to the form with the red exclamation mark and fixed the error there.