How do I correct an expense account error from a previous year?
We are an auto repair shop. We purchased a used truck in 2021 to be repaired and resold. Our employee placed all the parts bought into the Cost of Good Sold account. These parts were purchased in 2021. He thought it would be billed out by items on an invoice at the time of the sale. The truck was sold in 2022. An accountant told us these parts should be put into a Truck Expense account instead of Cost of Goods Sold. We just found the error by doing year-end. How can we correct the mistake since it is in two different years and reverse this to reflect the amount spent on the truck? Any help would be appreciated. Thank you.