Suppress Comparative Balance Sheet.
This field only applies to the last balance sheet of the year (period 12).
Y = Suppress the printing of the comparative net income amount on the balance sheet. You will typically enter Yes in this field.
N = Do not suppress the printing of the comparative net income amount on the balance sheet. The comparative (last year) figures will be out of balance by the net income amount (the one-sided entry you made before you ran GYEN to book net income to retained earnings).