It's good practice to reconcile the balance on your Aged Debtors nominal code with an aged debtors report. There may be times when the figures don't balance.

There are a few reasons why this may happen:

Reports are being ran with the incorrect criteria

Check the Aged Debtors report settings.

Data corruption

Check the Aged Debtors for corruption.

Journals posted to the debtors control account

Check for any journals posted to the Debtors Control Account.

Incorrect allocation dates

Check for incorrect allocation dates.

Link removed transactions

Check for transactions that are link removed.

 NOTE: You can get similar scenarios when reconciling Aged Creditors.