This document discusses different types of errors that may occur in bookkeeping and how to correct them. It describes errors that do not affect the trial balance, such as errors of omission, commission, principle, original entry, compensating errors, and complete reversal of entry. It also discusses errors that do affect the trial balance, which are revealed by a disagreement in the trial balance totals. A suspense account is used to temporarily record differences until the errors are located and corrected through journal entries. Examples are provided of each type of error and how to make the correcting journal entries.