> For the complete documentation index, see [llms.txt](https://docs.os.uk/os-downloads/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.os.uk/os-downloads/products/transport-network-portfolio/os-mastermap-highways-network-fundamentals/os-mastermap-highways-network-known-data-issues.md).

# OS MasterMap Highways Network Known Data Issues

## Live known data issues

<table data-full-width="true"><thead><tr><th>Data Issue Name</th><th>Data Issue Description</th><th>Product(s) Affected by the Issue</th></tr></thead><tbody><tr><td>Overlapping Path Links</td><td><p>There are 39 instances of overlapping Path Links.</p><p>This issue is being investigated.</p></td><td>OS MasterMap Highways Network – Paths</td></tr><tr><td>Short Network Links</td><td><p>There is 1 Connecting Link that is less than 1m in length.</p><p>This issue is being investigated.</p></td><td>OS MasterMap Highways Network – Paths</td></tr><tr><td>Isolated Road Links</td><td><p>A total of 220 non-track Road Links are disconnected from the main network or not properly connected at a node. These are not on major parts of the network.</p><p>This issue is being investigated.</p></td><td>OS MasterMap Highways Network – Roads and OS MasterMap Highways Network – RAMI</td></tr><tr><td>Streets without maintenance records</td><td><p>There are 7 features in the Street table which have a street type of either Designated Street Name or Officially Described Street and have no associated maintenance record.</p><p>This issue is being investigated by GeoPlace and Improvement Service.</p></td><td>OS MasterMap Highways Network – Roads and OS MasterMap Highways Network – RAMI</td></tr></tbody></table>

{% hint style="info" %}
To report an issue not currently listed here, please visit the ['Contact us' page on the OS website](https://www.ordnancesurvey.co.uk/contact-us/business-government/use-os-data).
{% endhint %}


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