fatal CII UBL auto-fix
An EN 16931 calculation or consistency rule: an amount or condition does not match the other values in the invoice — most often the totals chain (line net amounts → total without VAT → VAT → total with VAT → amount due). This is an error: the invoice is rejected until it is fixed.
Automatic fix: 9 € per file (excl. VAT where applicable). VAT category tax amount (BT-117) is recalculated as taxable amount (BT-116) × rate (BT-119) / 100, rounded to 2 decimals. The result page shows which errors the repair removes and whether the corrected file then passes — before you pay. Many files? Pilot and Repair API.
[BR-CO-17]-VAT category tax amount (BT-117) = VAT category taxable amount (BT-116) x (VAT category rate (BT-119) / 100), rounded to two decimals.
VAT category tax amount (BT-117) is recalculated as taxable amount (BT-116) × rate (BT-119) / 100, rounded to 2 decimals.
This rule is in the deterministic set of our repair engine (UBL 2.1; measured 2026-10-23: XRechnung 15 broken test invoices accepted after repair, 45 valid invoices unchanged; Peppol BIS Billing 3: 10 official examples unchanged, 40 mutated invoices: 36 accepted after repair, 4 rejected as expected — one documented limit, two with the repair parameter switched off, one where no address could be derived; profile conversion of 33 XRechnung test invoices to Peppol: 30 accepted). For UN/CEFACT CII (Factur-X / ZUGFeRD EN 16931 XML, XRechnung CII) the engine repairs the totals chain, VAT breakdown, rounding, decimals and element order (measured 2026-10-24: 53 valid CEN and XRechnung CII invoices unchanged; 28 broken invoices: 27 accepted after repair, 1 rejected as expected because a VAT exemption reason cannot be derived). Single files: 9 € on the result page; many files: the Repair API — see Pricing.
| Syntax | Severity | Context (XPath) | Test (XPath) |
|---|---|---|---|
| EN16931-UBL | fatal | cac:TaxTotal/cac:TaxSubtotal | (round(cac:TaxCategory[cac:TaxScheme/normalize-space(upper-case(cbc:ID))='VAT']/xs:decimal(cbc:Percent)) = 0 and (round(xs:decimal(cbc:TaxAmount)) = 0)) or (round(cac:TaxCategory[cac:TaxScheme/normalize-space(upper-case(cbc:ID))='VAT']/xs:decimal(cbc:Percent)) != 0 and ((abs(xs:decimal(cbc:TaxAmount)) - 1 < round(abs(xs:decimal(cbc:TaxableAmount)) * (cac:TaxCategory[cac:TaxScheme/normalize-space(upper-case(cbc:ID))='VAT']/xs:decimal(cbc:Percent) div 100) * 10 * 10) div 100 ) and (abs(xs:decimal(cbc:TaxAmount)) + 1 > round(abs(xs:decimal(cbc:TaxableAmount)) * (cac:TaxCategory[cac:TaxScheme/normalize-space(upper-case(cbc:ID))='VAT']/xs:decimal(cbc:Percent) div 100) * 10 * 10) div 100 ))) or (not(exists(cac:TaxCategory[cac:TaxScheme/normalize-space(upper-case(cbc:ID))='VAT']/xs:decimal(cbc:Percent))) and (round(xs:decimal(cbc:TaxAmount)) = 0)) |
| EN16931-CII | fatal | //ram:ApplicableHeaderTradeSettlement/ram:ApplicableTradeTax | (round(.[normalize-space(upper-case(ram:TypeCode)) = 'VAT']/xs:decimal(ram:RateApplicablePercent)) = 0 and (round(xs:decimal(ram:CalculatedAmount)) = 0)) or (round(.[normalize-space(upper-case(ram:TypeCode)) = 'VAT']/xs:decimal(ram:RateApplicablePercent)) != 0 and ((abs(xs:decimal(ram:CalculatedAmount)) - 1 <= round(abs(xs:decimal(ram:BasisAmount)) * (.[normalize-space(upper-case(ram:TypeCode)) = 'VAT']/xs:decimal(ram:RateApplicablePercent) div 100) * 10 * 10) div 100 ) and (abs(xs:decimal(ram:CalculatedAmount)) + 1 >= round(abs(xs:decimal(ram:BasisAmount)) * (.[normalize-space(upper-case(ram:TypeCode)) = 'VAT']/xs:decimal(ram:RateApplicablePercent) div 100) * 10 * 10) div 100 ))) or (not(exists(.[normalize-space(upper-case(ram:TypeCode))='VAT']/xs:decimal(ram:RateApplicablePercent))) and (round(xs:decimal(ram:CalculatedAmount)) = 0)) |
BT-117, BT-116, BT-119
BR-CO-14, BR-46, BR-DEC-20, BR-AE-09, BR-E-09, BR-G-09, BR-IC-09, BR-IG-09, BR-IP-09, BR-O-09, BR-S-09, BR-Z-09
Source: EN 16931-1 Schematron, UN/CEFACT CII syntax binding (ConnectingEurope/eInvoicing-EN16931, EUPL-1.2).
Source: EN 16931-1 Schematron, UBL syntax binding (ConnectingEurope/eInvoicing-EN16931, EUPL-1.2).