> For the complete documentation index, see [llms.txt](https://docs.os.uk/osngd/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/osngd/data-and-service-status/live-service-disruption-and-maintenance.md). # Live Service Disruption and Maintenance This page will be updated to note downtime due to planned or emergency maintenance or shutdown periods. Unexpected interruptions to product availability, releases and updates will be displayed here. {% hint style="info" %} ### API service status and OS NGD data issues * Any live interruptions to the availability of OS NGD API – Features and OS NGD API – Tiles will be documented on the [Service Availability Dashboard on the OS Data Hub](https://osdatahub.os.uk/support/status). * Please see the [Current Known Data Issues page](/osngd/data-and-service-status/current-known-data-issues.md) for details about current known data issues. * Please see the [Resolved Data Issues page](/osngd/data-and-service-status/resolved-data-issues.md) for details about resolved data issues. {% endhint %} ## OS NGD live service disruption ### Live service disruption starting: 04 September 2026 An ongoing service disruption is currently impacting the OS Building Features, OS Transport Features, OS Water Features, OS Structure Features and OS Land Features Collections. #### Impacted data The following feature types have been affected by the outage and have not been updated since **04 September 2026**: * Building Part Feature Type data schema versions 2.0, 2.1 and 2.2 * Land Feature Type data schema versions 3.0, 3.1, 3.2 and 3.3 * Rail Feature Type data schema versions 3.0 and 3.1 * Road Track Or Path Feature Type data schema versions 3.0, 3.1 and 3.2 * Structure Feature Type data schema versions 3.0 and 3.1 * Water Feature Type data schema versions v3.0 and 3.1 #### Disruption description These feature types listed in the 'Impacted data' section have not been updated since **04 September 2026** and daily changes are not currently being supplied for them. This means any daily orders containing these features will be supplied as blank files until the outage is resolved. These feature types are also not being updated in OS NGD API – Features. Customers do not need to take any action. Daily updates will continue to process as usual once the issue is resolved. #### When to expect the next update We are working to resolve this as a priority. Our teams have identified a fix and are working to implement shortly. We apologise for any inconvenience this may cause. A further update is expected on **18 September 2026**. ## OS NGD resolved service disruption The outage affecting the following feature type that resulted in it not being updated since **04 September 2026** has now been resolved: * Building Feature Type data schema versions 4.0 and 4.1 Data was available to customers for this feature type from **10 September 2026**. ## OS NGD planned maintenance No maintenance events are currently scheduled that will impact the availability of OS NGD. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.os.uk/osngd/data-and-service-status/live-service-disruption-and-maintenance.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.