The 12a-12d are simply line numbers to allow several codes to be entered. It makes no difference whatsoever what order or what line it goes on as long as it is in in box 12 somewhere.
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.
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
