Guide · Updated May 2026
Markdown exportWhen validation is unavailable
Temporary KoSIT or authoritative validation outages do not automatically mean the invoice data is wrong.
What you may see
Use these points as the practical checks for this section.
- Authoritative validation is temporarily unavailable
- KoSIT validation unavailable
- Validation service unavailable
- Validation proof unavailable
What this means
Invoice Converter can run local checks, but final XRechnung-style validation may depend on an authoritative validator service. If that service is starting, unhealthy, or temporarily unreachable, the page may pause the final validation gate.
What to do
Use these points as the practical checks for this section.
- Fix any visible invoice data errors first.
- Wait a short time and run validation again.
- For production e-invoices, wait for validation to pass before sending the file to a buyer or portal.