That happens when either or both Schedule CA or CA(540NR) line 37 columns B and/or C are negative numbers. Forms 540 & 540NR are showing lines 14 & 16 as the FTB instructs - if column B is a negative number it goes to 540/540NR line 16. Same for column C, it goes to 540/540NR line 14 if it's a negative. DO NOT OVERRIDE ANYTHING there or the FTB may reject your return.
