1. Error of commission
Transaction is entered using correct amount, on correct side, but in the wrong account of the same class
2. Error of complete reversal
Correct amount is entered in the correct accounts, but the entry has been made on the wrong side of each account
3. Error of omission
Transaction has been completely omitted
4. Error of original entry
An incorrect figure is used when a transaction is first entered in the accounting records.
5. Error of principle
Transaction if entered using the correct amount and on correct side, but in the wrong class of account
6. Compensating errors
These occur when 2 or more errors cancel each other out.