# Unknown Field Handling

> The requirement that a consumer ignore fields it does not recognize rather than fail on them.

Record: `lex:unknown-field-handling`
Kind: constraint
Layer: [Contracts Core](https://banes-lab.com/records/layer/contracts-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lex-unknown-field-handling

## category

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

## referenced-by

- [Forward Compatibility](https://banes-lab.com/records/arch/forward-compatibility.md)