# Legacy Constraints

> A binding limitation imposed by pre-existing legacy systems that a new design must accommodate.

Record: `lexicon:legacy-constraints`
Kind: constraint
Layer: [Evolution Principles](https://banes-lab.com/records/layer/evolution-principles.md)
Canonical: https://banes-lab.com/ontology/lexicon#lexicon-legacy-constraints

Listed in [Lexicon terms](https://banes-lab.com/api/records/lexicon.md), after [Innovation/Autonomy](https://banes-lab.com/records/lexicon/innovation-autonomy.md) and before [Local Autonomy](https://banes-lab.com/records/lexicon/local-autonomy.md).

## Category

- [Architecture Review Evolution Governance](https://banes-lab.com/records/lexicon-category/architecture-review-evolution-governance.md)

## In tension with

- [Greenfield Development](https://banes-lab.com/records/architecture/greenfield-development.md)
- [Greenfield Development / Legacy Constraints](https://banes-lab.com/records/tension/greenfield-development-legacy-constraints.md)

## Linked from

- [Architecture Review / Evolution / Governance Artifacts](https://banes-lab.com/ontology/principles/architecture-category-architecture-review-evolution-governance-artifacts.md)
- [The resolutions](https://banes-lab.com/ontology/schema/the-resolutions.md)