As extraordinary as it may seem, sometimes the Trial Balance is out of balance!
The purpose of this report is to verify for any error in your departmental General Ledger file. A way of checking the Departments integrity.
The report includes a regular Trial Balance, but unlike the regular Trial Balance, the Unassigned and the Department columns are out of balance and it's normal.
This is because not every account have been setup in departments causing a discrepancy between Debits and Credits.
So, the total Debits and Credits of accounts assigned to Departments must equal the total Debits and Credits of Unassigned accounts.