Validation rules
PEPPOL-EN16931-R120
An invoice line net amount must equal quantity × (price / base quantity) plus line charges minus line allowances.
- Rule
PEPPOL-EN16931-R120— official EN 16931 / XRechnung rule- Severity
- warning
- Business term
BT-131— Line net amount- Field in your JSON
invoice.lines[*]- Detected by
- tier 3 — KoSIT validator (authoritative)
- Reachability
- Only reachable when validating your own XML — normbill-generated documents cannot trigger it
The engine computes every line net exactly this way (calc/totals.ts).
How to fix it
Recompute the line's cbc:LineExtensionAmount from its quantity, price and line allowances/charges.
PEPPOL-EN16931-R120 auf Deutsch — was bedeutet der Fehler?
Der Positionsnettobetrag muss Menge × (Preis / Basismenge) plus Positionszuschläge minus Positionsnachlässe entsprechen.
So beheben Sie den Fehler
Berechnen Sie cbc:LineExtensionAmount aus Menge, Preis und Positionsnachlässen/-zuschlägen neu.
Official sources
- XRechnung specification (KoSIT / xeinkauf.de)
- KoSIT validator on GitHub and the XRechnung validator configuration
Every 422 from the API lists the rule id, the path in your request JSON, a plain-language message and a suggested fix — see the docs overview for the report format.