> 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

This page lists known data issues in relation to the OS MasterMap Highways Network products. Once resolved, details of an issue will be held on the page until the next release of the products.

## Live known data issues

<table data-full-width="true"><thead><tr><th>Data Issue Name</th><th width="281">Data Issue Description</th><th>Product(s) Affected by the Issue</th></tr></thead><tbody><tr><td>Short Network Links</td><td>There is 1 Connecting Link that is less than 1m in length.</td><td>OS MasterMap Highways Network – Paths</td></tr><tr><td>Isolated Road Links</td><td>A total of 202 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.</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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