BR-AF-01:When an invoice contains items, allowances, or charges with VAT category...
Fix: Recalculate the value in `cac:InvoiceLine` to match the expected formula. Verify all contributing amounts are correct.
When an invoice contains items, allowances, or charges with VAT category "IGIC" (Canary Islands indirect tax), the VAT breakdown must include at least one entry with the IGIC VAT category code.
Engine Classification
Financial or legal field · Modification blocked by policy
What is BR-AF-01?
BR-AF-01 is a fatal validation rule defined in the EN 16931 specification.
When this rule fires, the invoice is rejected by Peppol access points and never reaches the buyer.
Why This Error Matters
Invoice will be rejected by validation. IGIC invoices require proper VAT breakdown for Canary Islands tax compliance.
BR-AF-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-AF-01
- ·Specification: EN 16931
How to Fix It
Identify the issue in your invoice
When an invoice contains items, allowances, or charges with VAT category "IGIC" (Canary Islands indirect tax), the VAT breakdown must include at least one entry with the IGIC VAT category code.
Correct this in your invoicing software
Recalculate the value in `cac:InvoiceLine` to match the expected formula. Verify all contributing amounts are correct.
Re-export and validate
Generate a new invoice export from your accounting system and re-validate to confirm BR-AF-01 is resolved.
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
Common Causes
- ·Line items marked as IGIC but VAT breakdown missing IGIC category
- ·VAT breakdown not generated for IGIC transactions
- ·ERP does not recognize IGIC as separate tax category
- ·Manual invoice creation missed IGIC VAT breakdown requirement
- ·Wrong VAT category code used in breakdown
Seeing this in production? The API handles BR-AF-01 automatically. See the fix response →
Frequently Asked Questions
When an invoice contains items, allowances, or charges with VAT category "IGIC" (Canary Islands indirect tax), the VAT breakdown must include at least one entry with the IGIC VAT category code.
Recalculate the value in `cac:InvoiceLine` to match the expected formula. Verify all contributing amounts are correct. You can also use Invoice Navigator's compliance engine to correct this automatically in your pipeline.
Yes, BR-AF-01 is a critical error that will cause invoice rejection. It must be fixed before submission.
Many instances of BR-AF-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: 14 April 2026
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