Boxes 14,15,16 are only used if you actually had CA tax withholding done by the issuer of that 1099-DIV.
Thus, if the issuer did not have any $$ listed in box 16, you need to leave 14, 15 16 entirely blank.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
