BT-109Invoice total amount without VAT
Official rule text
[BR-DEC-12] The allowed maximum number of decimals for the Invoice total amount without VAT (BT-109) is 2.
Why this error occurs
Monetary amounts in EN 16931 may have at most two decimals. The value in your file has more, usually because the software writes unrounded calculation results (e.g. 12.3456) or because a percentage was written into an amount field.
How to fix it
Round the amount to two decimals before serialising it. Quantities and prices may keep more decimals; only the amount elements named in the rule are limited. Do the rounding per component and then recheck the total rules (BR-CO-10 to BR-CO-16).
What the validator checks
Checked element (context):
UBL
cac:LegalMonetaryTotalTest (XPath):
string-length(substring-after(cbc:TaxExclusiveAmount,'.'))<=2CII
//ram:SpecifiedTradeSettlementHeaderMonetarySummationTest (XPath):
string-length(substring-after(ram:TaxBasisTotalAmount,'.'))<=2Check your invoice
Drop your XML or PDF on the validator and every failed rule is linked to its page here. Free, no account, the file is not stored.
Same check via API:
curl -F file=@invoice.xml https://einvoicechecker.com/v1/validateRelated rules
BR-13An Invoice shall have the Invoice total amount without VATBR-CO-13Total without VAT (BT-109) does not add upBR-CO-15Total with VAT (BT-112) is not net plus VATBR-DEC-01Document level allowance amount (BT-92) has more than 2 decimalsBR-DEC-02The allowed maximum number of decimals for the Document level allowance base amount is 2BR-DEC-05The allowed maximum number of decimals for the Document level charge amount is 2BR-DEC-06The allowed maximum number of decimals for the Document level charge base amount is 2BR-DEC-09The allowed maximum number of decimals for the Sum of Invoice line net amount is 2
Frequently asked questions
What does BR-DEC-12 mean?
BR-DEC-12 is a en 16931 core rule: The allowed maximum number of decimals for the Invoice total amount without VAT (BT-109) is 2.
Will my invoice be rejected because of BR-DEC-12?
Yes. BR-DEC-12 is flagged "fatal"; validators (KoSIT, Peppol access points, the German ZRE/OZG-RE portals) reject the invoice until it is fixed.
Which formats does BR-DEC-12 apply to?
Every EN 16931 invoice: XRechnung, ZUGFeRD 2.x / Factur-X (profiles EN 16931, EXTENDED, XRECHNUNG), Peppol BIS Billing 3.0, and national CIUS such as the Dutch NLCIUS or the Italian/Spanish profiles. Syntax: UBL and CII.
Source: EN 16931-1:2017 schematron (CEN TC434, via Peppol BIS 3.0.20). Catalogue generated from the official schematron on 2026-10-14.