Make changes or delete a previously entered opening balance for a category.
The total value of all opening balances must balance to conform to bookkeeping rules.
This means the total amount of all the values in the Debit column must equal the total value of all the values in the Credit column.
When the Debit and Credit total don't match, we add the difference to the special Opening Balances category (9998), which is used for this purpose.
In general, your opening balances should balance. If there's a value on your Opening Balance category, check you've entered the values from your trial balance, for your bank accounts correctly.