# KoSIT Report

The **KoSIT Report** viewer (DXP eInv KoSIT Report Viewer) displays the official KoSIT *Pruefbericht* (validation report) for a generated e-invoice directly inside Business Central.

## What is KoSIT?

KoSIT (Koordinierungsstelle fuer IT-Standards) is the German public-sector body responsible for the XRechnung standard. It publishes the official validator that checks whether an e-invoice conforms to XRechnung. When the app pre-validates a document, it runs it against this official validator; the validator returns a *Pruefbericht* - the authoritative validation report describing exactly which rules passed and which failed.

## The viewer

The KoSIT report is produced as an HTML document. The viewer renders that HTML in a **WebPageViewer** control so you can read the official report - with all its formatting, rule references and pass/fail detail - without leaving Business Central.

{add screenshot of KoSIT Report here}

## Action

- **Download Report** - saves the KoSIT report to a file so it can be archived or forwarded (for example as evidence of validation).

<p class="callout info">You can open the KoSIT report for an entry from the [Document Status](https://docs.squeeze.one/books/einvoice-sender-for-microsoft-dynamics-365-bc-en-us/page/document-status) page or from the [Artifacts](https://docs.squeeze.one/books/einvoice-sender-for-microsoft-dynamics-365-bc-en-us/page/artifacts-gobd-audit-history) page via **Show KoSIT Report**.</p>