When posting entries to a closed year, the amounts that normally will be posted to Revenue and Expense accounts should be posted to Retained Earnings.  If you credit a Revenue account, credit Retained Earnings, same for expenses.

Thank you Richard.  Just to be clear.  If the accountant wants me to make this adjustment -  CR1820 Office Furniture, DB5700 Office Supplies, then I should enter it as CR1820 Office Furniture, DB3500 Retained Earnings?

Yes, though most default setups use 3500 as the Retained Earnings Header account and 3560 as the Retained Earnings Previous Year postable account.

thank you for your help Richard.