That's Schedule CA line 43. There is a a worksheet for that line when itemized deductions are subject to the phaseout: California Itemized Deductions Phaseout Worksheet. If it is active it will print out with your copy of the Calif return, but it won't print out with the "filing" copy. It mimics the worksheet in the Sch CA instructions on page 7 of the instructions:
https://www.ftb.ca.gov/forms/2016/16_540cains.pdf
