Autum8 / EN16931 rules / BR-CO-13

EN16931 · BR-CO-13 · Severity: ERROR

Invoice net total does not match

The total before VAT must equal the line total, minus document allowances, plus document charges.

Rule ID & Severity

BR-CO-13 · ERROR

Standard & Version

EN16931 (explanation-2026-10-11)

Formula / Condition

Net total = line total − allowances + charges

Affected Fields

BT-106, BT-107, BT-108, BT-109

The calculation

Net total = line total − allowances + charges

BT-109 = BT-106 − BT-107 + BT-108. Absent document allowance and charge totals contribute zero.

Common causes

• A document discount was left out.
• A delivery charge was counted twice.

Affected fields

BT-106 · BT-107 · BT-108 · BT-109

cac:LegalMonetaryTotal/cbc:TaxExclusiveAmount

Invalid and corrected examples

For a line total of EUR 1,275.00 with no document allowances or charges, the net total is EUR 1,275.00.

Invalid header value

<cbc:TaxExclusiveAmount currencyID="EUR">1270.00</cbc:TaxExclusiveAmount>

Corrected header value

<cbc:TaxExclusiveAmount currencyID="EUR">1275.00</cbc:TaxExclusiveAmount>

These are XML fragments. They are not complete invoices. Reconcile the business data before changing any commercial amount.

Published source

BR-CO-13 in the published EN16931 UBL syntax binding ↗

Explanation version: explanation-2026-10-11. This worked example uses UBL paths; the dedicated CII validator runs its separate official syntax binding.

Try a failing calculation locally

Load the fictional sample below to inspect a BR-CO-13 mismatch. The sample is an arithmetic teaching fixture, not a standards-conformant invoice.