My client just got an inquiry letter from NYS Tax regarding the Code A-003 adjustment for charitable contributions (up to $300 max) for filers who don't itemize. I mistakenly hadn't included Form IT-558 (NYS Adjustments Due to Decoupling from the IRC) with the (paper) filing. Since NYS de-coupled from the Federal change, NYS requires a $300 addback.
All you need to do is send them the IT-558. TurboTax properly computes the Recomputed Federal AGI on line 19a of the IT-201.