> For the complete documentation index, see [llms.txt](https://developers.portos.sk/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developers.portos.sk/previous-versions.md).

# Previous versions

- [Migration to V4.3](https://developers.portos.sk/previous-versions/migration-to-v4.3.md): Thi article describes breaking changes between PORTOS API v4.2 and v4.3.
- [Migration to V4.2](https://developers.portos.sk/previous-versions/migration-to-v4.2.md): Thi article describes breaking changes between PORTOS API v4.1 and v4.2.
- [Migration to V4.1](https://developers.portos.sk/previous-versions/migration-to-v4.1.md): Thi article describes breaking changes between PORTOS API v4.0 and v4.1.
- [Migration to V4](https://developers.portos.sk/previous-versions/migration-to-v4.md): Thi article describes breaking changes between PORTOS API v3.X and v4.0.
- [Legacy documentation](https://developers.portos.sk/previous-versions/legacy-documentation.md)