Examine the types of errors not affecting the trial balance?

1. Errors of omission: These occur when a transaction is completely left out of the accounting records. This can result in an imbalance in the trial balance, but it is not immediately apparent because the missing transaction is not included in the calculations.

2. Errors of commission: These occur when a transaction is recorded incorrectly, such as entering the wrong amount or posting to the wrong account. While these errors can affect individual account balances, they may not necessarily impact the overall trial balance if the debits and credits still balance out.

3. Errors of principle: These occur when a transaction is recorded using the wrong accounting principle, such as capitalizing an expense instead of expensing it. While these errors can lead to inaccuracies in individual account balances, they may not affect the trial balance if the debits and credits still match.

4. Errors of original entry: These occur when a transaction is initially recorded incorrectly, such as transposing digits or recording a transaction in the wrong period. These errors may not immediately impact the trial balance if they are not caught and corrected before the financial statements are prepared.

5. Errors of reversal: These occur when a transaction is recorded twice, either as a debit and a credit or in the wrong direction. While these errors can lead to inaccuracies in individual account balances, they may not affect the trial balance if the debits and credits still balance out.