CASDI in box 19 is the old way to do it and some employers still do that. TurboTax recognizes both places but box 14 is preferred. It is okay for you to enter it in box 14 with the drop-down menu for CASDI rather than box 19. No correction is necessary.
CASDI only matters if you itemize and choose to deduct state taxes rather then sales tax since CASDI is a deductible state tax. TurboTax should carry that tax to Schedule A whether it is in box 14 or box 19.
