BR-B-01:Split payment requires domestic Italian invoice
Fix: Recalculate the value in `cac:InvoiceLine` to match the expected formula. Verify all contributing amounts are correct (BR-B-01).
Split payment (scissione pagamenti, VAT category B) is only valid for domestic Italian invoices. Both seller and buyer must be in Italy.
Engine Classification
Financial or legal field · Modification blocked by policy
What is BR-B-01?
BR-B-01 is a fatal validation rule defined in the EN 16931 specification. It validates the ID where value is "B". Also check: cac:AccountingSupplierParty and cac:AccountingCustomerParty country codes. element under TaxSubtotal > TaxCategory in the UBL invoice XML.
When this rule fires, the invoice is rejected by Peppol access points and never reaches the buyer.
Target path: XPath: cac:TaxTotal/cac:TaxSubtotal/cac:TaxCategory/cbc:ID where value is "B". Also check: cac:AccountingSupplierParty and cac:AccountingCustomerParty country codes.
Why This Error Matters
Invoice will be rejected. Italian split payment (scissione dei pagamenti) has strict rules for domestic public sector invoices.
BR-B-01 is a hard failure — the invoice must be corrected and re-sent before it can reach the recipient.
Validator Behavior
- ·Causes invoice rejection
- ·Error returned: BR-B-01
- ·Specification: EN 16931
How to Fix It
Check seller country
Verify seller postal address country is IT (Italy)
Check buyer country
Verify buyer postal address country is IT (Italy)
Change VAT category if needed
If not domestic Italian, use standard VAT category (S) instead of split payment (B)
Before / After
<Invoice> <cac:InvoiceLine>999.99</cac:InvoiceLine> <!-- Does not match expected calculation --> </Invoice>
<Invoice> <cac:InvoiceLine>100.00</cac:InvoiceLine> <!-- Matches expected calculation --> </Invoice>
Technical Reference
XPath: cac:TaxTotal/cac:TaxSubtotal/cac:TaxCategory/cbc:ID where value is "B". Also check: cac:AccountingSupplierParty and cac:AccountingCustomerParty country codes.Common Causes
- ·Split payment used on non-Italian invoice
- ·VAT category B (scissione pagamenti) on cross-border invoice
- ·Split payment applied without Italian buyer/seller
- ·Country codes not Italian but split payment selected
- ·Invoice misconfigured for Italian public sector rules
Seeing this in production? The API handles BR-B-01 automatically. See the fix response →
Frequently Asked Questions
Split payment (scissione pagamenti, VAT category B) is only valid for domestic Italian invoices. Both seller and buyer must be in Italy.
Recalculate the value in `cac:InvoiceLine` to match the expected formula. Verify all contributing amounts are correct (BR-B-01). You can also use Invoice Navigator's compliance engine to correct this automatically in your pipeline.
Yes, BR-B-01 is a critical error that will cause invoice rejection. It must be fixed before submission.
Many instances of BR-B-01 can be automatically corrected using Invoice Navigator's compliance engine. The fix is applied in your pipeline with full audit evidence.
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Last updated: 3 March 2026
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