# Version Field

> A field on a record whose value changes on each write, used to detect concurrent modification.

Record: `lexicon:version-field`
Kind: artifact
Layer: [Atomic Boundary](https://banes-lab.com/records/layer/atomic-boundary.md)
Canonical: https://banes-lab.com/ontology/lexicon#lexicon-version-field

Listed in [Lexicon terms](https://banes-lab.com/api/records/lexicon.md), after [Retry Complexity](https://banes-lab.com/records/lexicon/retry-complexity.md) and before [Lock Ownership](https://banes-lab.com/records/lexicon/lock-ownership.md).

## Category

- [Transactions / State / Concurrency](https://banes-lab.com/records/lexicon-category/transactions-state-concurrency.md)

## Required by

- [Optimistic Locking](https://banes-lab.com/records/architecture/optimistic-locking.md)

## Linked from

- [Transactions / State / Concurrency](https://banes-lab.com/ontology/principles/architecture-category-transactions-state-concurrency.md)