aguayode,
While such adjustments are relatively uncommon, you should take a look at CA FTB publication 1005
https://www.ftb.ca.gov/forms/2020/2020-1005-publication.pdf
to see if anything there applies. (My wife and I do have to make adjustments for IRA distributions because we contributed to IRAs way back in the early 80s before CA allowed a tax deduction for them.)
