# No Backtracking Requirement

> The requirement that processing never need to revisit earlier input to make a decision.

Record: `lex:no-backtracking-requirement`
Kind: constraint
Layer: [Execution Core](https://banes-lab.com/records/layer/execution-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lex-no-backtracking-requirement

## category

- [Streaming / Pipeline / Dataflow Processing](https://banes-lab.com/records/lex-category/streaming-pipeline-dataflow-processing.md)

## referenced-by

- [Forward-Only Processing](https://banes-lab.com/records/arch/forward-only-processing.md)