# Check Both Directions

> A technique for checking that every index entry resolves to a file and that every file has an entry.

Record: `lexicon:check-both-directions`
Kind: technique
Layer: [Execution Core](https://banes-lab.com/records/layer/execution-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lexicon-check-both-directions

Listed in [Lexicon terms](https://banes-lab.com/api/records/lexicon.md), after [Generate the Index from the Directory](https://banes-lab.com/records/lexicon/generate-the-index-from-the-directory.md) and before [Declare All Three Lifetime Axes](https://banes-lab.com/records/lexicon/declare-all-three-lifetime-axes.md).

## Category

- [Coordination Surfaces](https://banes-lab.com/records/lexicon-category/coordination-surfaces.md)

## Refactors

- [Two-Direction Index](https://banes-lab.com/records/architecture/two-direction-index.md)

## Linked from

- [Coordination Surfaces](https://banes-lab.com/ontology/principles/architecture-category-coordination-surfaces.md)