BR-AE-04:When document level charges use the reverse charge VAT category, both seller...
Fix: This requires user input to resolve. Review the relevant cbc: and cac: elements in your Invoice XML and provide the correct value. (BR-AE-04). Provide the required value in the free validator.
When document level charges use the reverse charge VAT category, both seller and buyer must have proper tax identifiers for tax compliance.
Engine Classification
Business data required · Explicit input workflow · No assumptions made
Required input: Seller VAT ID, Buyer VAT ID
What is BR-AE-04?
BR-AE-04 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. Reverse charge charges require full party identification for proper VAT treatment.
BR-AE-04 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-AE-04
- ·Specification: EN 16931
How to Fix It
Identify the missing data
When document level charges use the reverse charge VAT category, both seller and buyer must have proper tax identifiers for tax compliance.
Provide the required value
This requires user input to resolve. Review the relevant cbc: and cac: elements in your Invoice XML and provide the correct value. (BR-AE-04).
Re-validate your invoice
Upload the corrected invoice to confirm BR-AE-04 is resolved.
Before / After
<Invoice> <!-- Issue: When document level charges use the reverse charge VAT categ --> </Invoice>
<Invoice> <!-- Issue resolved per EN 16931 --> </Invoice>
Technical Reference
Common Causes
- ·Charge marked reverse charge but party identifiers missing
- ·Seller tax identifier not included on invoice
- ·Buyer tax identifier not provided
- ·Document level charge added without identifier validation
- ·ERP does not enforce identifier rules for charge VAT categories
Seeing this in production? The API handles BR-AE-04 automatically. See the fix response →
Frequently Asked Questions
When document level charges use the reverse charge VAT category, both seller and buyer must have proper tax identifiers for tax compliance.
This requires user input to resolve. Review the relevant cbc: and cac: elements in your Invoice XML and provide the correct value. (BR-AE-04). You can also use Invoice Navigator's compliance engine to correct this automatically in your pipeline.
Yes, BR-AE-04 is a critical error that will cause invoice rejection. It must be fixed before submission.
Many instances of BR-AE-04 can be automatically corrected using Invoice Navigator's compliance engine. The fix is applied in your pipeline with full audit evidence.
Related Content
Last updated: 14 April 2026
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