# Strong Validation

> The degree to which input is strictly validated, in tension with tolerating unknown future fields.

Record: `lexicon:strong-validation`
Kind: quality-attribute
Layer: [Contracts Core](https://banes-lab.com/records/layer/contracts-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lexicon-strong-validation

Listed in [Lexicon terms](https://banes-lab.com/api/records/lexicon.md), after [Specialized Endpoints](https://banes-lab.com/records/lexicon/specialized-endpoints.md) and before [Version Sprawl](https://banes-lab.com/records/lexicon/version-sprawl.md).

## Category

- [Contracts / Interfaces / Compatibility](https://banes-lab.com/records/lexicon-category/contracts-interfaces-compatibility.md)

## In tension with

- [Forward Compatibility](https://banes-lab.com/records/architecture/forward-compatibility.md)
- [Forward Compatibility / Strong Validation](https://banes-lab.com/records/tension/forward-compatibility-strong-validation.md)

## Linked from

- [Contracts / Interfaces / Compatibility](https://banes-lab.com/ontology/principles/architecture-category-contracts-interfaces-compatibility.md)
- [The resolutions](https://banes-lab.com/ontology/schema/the-resolutions.md)