Validation rules

BR-CO-10 — EN 16931 rule

The sum of line net amounts (BT-106) does not match the invoice lines.

Rule: BR-CO-10 — official EN 16931 / XRechnung rule
Severity: error
Business term: BT-106 — Sum of line net amounts
Field in your JSON: invoice.totals.net

How to fix it

Remove invoice.totals to let normbill compute it, or fix the amount.

BR-CO-10 auf Deutsch — was bedeutet der Fehler?

Die Summe der Positionsnettobeträge (BT-106) stimmt nicht mit den Rechnungspositionen überein.

So beheben Sie den Fehler

Lassen Sie invoice.totals weg, damit normbill die Summen exakt berechnet — oder korrigieren Sie den Betrag.

Related rules

BR-12 — The sum of invoice line net amounts (BT-106) is missing from the document totals.
BR-DEC-09 — The sum of line net amounts (BT-106) uses more than 2 decimal places — EN 16931 allows at most 2.
BR-CO-09 — A VAT identifier (seller BT-31, buyer BT-48, or tax representative BT-63) does not start with an ISO 3166-1…
BR-CO-11 — The sum of document-level allowances (BT-107) does not equal the sum of the individual allowance amounts…
BR-CO-08 — An invoice line charge reason code (BT-145) and reason text (BT-144) should describe the same type of charge.
BR-CO-12 — The sum of document-level charges (BT-108) does not equal the sum of the individual charge amounts (BT-99).

Official sources

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.

Or try it live: drop any XRechnung XML on the free validator — same KoSIT-backed report, no account.