# Breaking Changes

> Changes that break existing consumers by altering behavior or shape they depend on.

Record: `lexicon:breaking-changes`
Kind: anti-pattern
Layer: [Contracts Core](https://banes-lab.com/records/layer/contracts-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lexicon-breaking-changes

Listed in [Lexicon terms](https://banes-lab.com/api/records/lexicon.md), after [Breaking Change](https://banes-lab.com/records/lexicon/breaking-change.md) and before [External State Mutation](https://banes-lab.com/records/lexicon/external-state-mutation.md).

## Category

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

## Negated by

- [Stable Interfaces](https://banes-lab.com/records/architecture/stable-interfaces.md)

## Linked from

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