# Encapsulate Validation

> A technique for placing a value's validation in the type that holds it, so every instance is valid.

Record: `lexicon:encapsulate-validation`
Kind: technique
Layer: [Computation Core](https://banes-lab.com/records/layer/computation-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lexicon-encapsulate-validation

Listed in [Lexicon terms](https://banes-lab.com/api/records/lexicon.md), after [Validate at the Boundary](https://banes-lab.com/records/lexicon/validate-at-the-boundary.md) and before [Validate as a Group](https://banes-lab.com/records/lexicon/validate-as-a-group.md).

## Category

- [Correctness / Determinism / Verification](https://banes-lab.com/records/lexicon-category/correctness-determinism-verification.md)

## Refactors

- [Primitive Obsession](https://banes-lab.com/records/architecture/primitive-obsession.md)

## Linked from

- [Anti-patterns](https://banes-lab.com/ontology/principles/architecture-category-anti-patterns.md)