CII or UBL

XRechnung 3.0 KoSIT validator API

German B2G in CII or UBL syntax, checked against the KoSIT rules in force (3.0). Leitweg-ID and BR-DE rules included. Version pinning ready for 4.0.

Legal compliance dates

• Germany · In force

  Federal and Länder B2G: XRechnung 3.0

• France · N/A

  Use Factur-X / Chorus Pro instead of XRechnung

• Poland · N/A

  National KSeF schema; convert from EN 16931 UBL

Sample JSON payload

{
  "invoice": {
    "number": "XR-3001",
    "leitwegId": "04011000-12345-67",
    "buyerReference": "B2G-DE",
    "currency": "EUR"
  }
}

Open API docs →