---
title: assembler navigation cli namespace
description: Validate the global navigation structure and cross-doc-set link references. 
url: https://docs-v3-preview.elastic.dev/elastic/docs-builder/pull/2927/cli/assembler/navigation
products:
  - Elastic Docs Builder
---

# assembler navigation cli namespace
```bash
docs-builder assembler navigation --help
```

Validate the global navigation structure and cross-doc-set link references.

## Commands

<page-card>
  Check navigation.yml for duplicate path prefixes and non-unique URLs.
</page-card>

<page-card>
  Check that no link in a local links.json conflicts with a path prefix defined in navigation.yml.
</page-card>