# Transposition error

> Transposition error — Two digits swapped when an amount is keyed — 54 entered as 45. The trial balance goes out by a difference that is always divisible by nine, which is how it is found.

Source: https://lopifi.com/glossary/transposition-error
Part of: Lopifi — US GAAP books on autopilot, reviewed by a CPA (https://lopifi.com)

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**What is transposition error?** In accounting, transposition error means two digits swapped when an amount is keyed — 54 entered as 45. The trial balance goes out by a difference that is always divisible by nine, which is how it is found.

## Words this system refuses for it

- typo
- rounding difference

- **Category:** Core ledger
- **Specified in:** [Lexicon](https://lopifi.com/md/docs/domain/11-lexicon)
- **Related:** trial-balance