> 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/buildings-and-infrastructure-portfolio/os-open-toid/release-notes/september-2025-epoch-46.md).

# September 2025 – Epoch 46

## Feature counts

Feature counts for this release are provided in the following table:

| Product                       | Source Product  | CSV             | GeoPackage      |
| ----------------------------- | --------------- | --------------- | --------------- |
| OS MasterMap Sites Layer      | 49 076          | 49 076          | 49 076          |
| OS MasterMap Highways Network | 20 823 530      | 20 823 530      | 20 823 530      |
| OS MasterMap Topography Layer | 488 319 276     | 488 319 276     | 488 319 276     |
| **Total**                     | **509 191 882** | **509 191 882** | **509 191 882** |

There are no missing features and no duplicated TOIDs in this release. No significant errors have been identified.

## Next release

The next release of OS Open TOID (Epoch 47) is scheduled for **13 October 2025**.


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