# Page Not Found

The URL `first-steps/platform-developer-documentation-and-api` does not exist.

You might be looking for one of these pages:
- [Aufsetzen von Domain und DNS](https://docs.payrexx.com/platform/setup-und-konfiguration/einrichtung-der-plattform/aufsetzen-von-domain-und-dns.md)
- [Release Notes 2025](https://docs.payrexx.com/platform/release-notes/release-notes-2025.md)
- [Release Notes 2024](https://docs.payrexx.com/platform/release-notes/release-notes-2024.md)
- [Release Notes 2023](https://docs.payrexx.com/platform/release-notes/release-notes-2023.md)
- [Händler-API](https://docs.payrexx.com/platform/setup-und-konfiguration/einrichtung-der-plattform/handler-api.md)

## How to find the correct page

1. **Browse the full index**: [/sitemap.md](https://docs.payrexx.com/platform/sitemap.md) - Complete documentation index
2. **View the full content**: [/llms-full.txt](https://docs.payrexx.com/platform/llms-full.txt) - Full content export

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/platform/setup-und-konfiguration/einrichtung-der-plattform/aufsetzen-von-domain-und-dns.md`)
- Use `Accept: text/markdown` header for content negotiation