The expense object code range is 90100-90981. (See example of a billing entry below). Refer to the Chart of Accounts on the Controller's website. Difference between "Chargebacks" and "Adjustment" ...

An expense account titled "Salaries Expense" is debited $10,000 at the end of December to reflect wages accrued while a corresponding "Salaries Payable" liability account is credited for $10,000.