Deductions & credits

Hi,in my federal section tt said my original mortgage amount to be x ( 1098 box 1 summation of two lenders since i refinanced)  and the adjusted amount ( due to federal limitation of 750k) was y, which is also present in schedule A and x > y. However tt puts in CA(540) Part II , column C addition amount of a large negative value. I thought based on your answer above it should be (x-y ) = a small positive number in my case? Am I missing something?