errorbusinessEN 16931

BR-44:Invoice line charge reason required

Fix: Invoice Navigator automatically fixes this Invoice compliance issue by updating the relevant XML elements (BR-44). Upload your invoice to fix this automatically.

An invoice line charge (BG-28) is missing both a reason text and reason code. At least one must be provided to explain this line surcharge.

Severity
Fatal
Rule set
EN 16931
Country
All EU
Fix type
AUTO-FIX
Confidence
85%
Category
identifier

Engine Classification

Add default scheme ID (GTIN/EAN) for item standard identifier

Confidence: 85% · Applied automatically in pipeline

What is BR-44?

BR-44 is a fatal validation rule defined in the EN 16931 specification. It validates the @schemeID element under StandardItemIdentification > ID in the UBL invoice XML.

When this rule fires, the invoice is rejected by Peppol access points and never reaches the buyer.

Target path: //cac:InvoiceLine/cac:Item/cac:StandardItemIdentification/cbc:ID/@schemeID

Why This Error Matters

Invoice rejected. Each charge must be explained for buyer verification.

BR-44 is a hard failure — the invoice must be corrected and re-sent before it can reach the recipient.

Invoice Navigator can automatically correct this error in your pipeline. The fix is applied with full audit evidence, so your compliance trail remains intact.

Validator Behavior

  • ·Causes invoice rejection
  • ·Error returned: BR-44
  • ·Specification: EN 16931

How to Fix It

1.

Find line charge

Locate the cac:AllowanceCharge with ChargeIndicator=true within cac:InvoiceLine that is missing reason

2.

Add reason code

Insert <cbc:AllowanceChargeReasonCode>SAA</cbc:AllowanceChargeReasonCode> (SAA = Shipping and handling)

3.

Or add reason text

Alternatively add <cbc:AllowanceChargeReason>Service charge</cbc:AllowanceChargeReason>

Before / After

Failing XML
<Invoice>
  <!-- Issue: Each Invoice line charge shall have an Invoice line charge r -->
</Invoice>
Corrected XML
<Invoice>
  <!-- Issue resolved per EN 16931 -->
</Invoice>

Technical Reference

XPath//cac:InvoiceLine/cac:Item/cac:StandardItemIdentification/cbc:ID/@schemeID
SpecEN 16931
Operationset_default
StrategyAdd default scheme ID (GTIN/EAN) for item standard identifier

Code Example

<cac:AdditionalDocumentReference>
  <cbc:ID>DOC-001</cbc:ID>
  <cbc:DocumentDescription>Technical specifications</cbc:DocumentDescription>
  <cac:Attachment>
    <cbc:EmbeddedDocumentBinaryObject mimeCode="application/pdf" filename="specs.pdf">
      <!-- Base64 content -->
    </cbc:EmbeddedDocumentBinaryObject>
  </cac:Attachment>
</cac:AdditionalDocumentReference>

Common Causes

  • ·Line charge missing reason text or code
  • ·Neither ChargeReason nor ReasonCode provided
  • ·Line surcharge applied without categorization
  • ·Template missing line charge reason field
  • ·Reason not required in source line item charge

Seeing this in production? The API handles BR-44 automatically. See the fix response →

Commonly Seen In

All invoicing software

Frequently Asked Questions

Additional document references should include a description.

Add description to document attachments. You can also use Invoice Navigator's automatic Fixer tool to correct this instantly.

BR-44 is a warning that may not always cause rejection, but it indicates a potential compliance issue that should be addressed to ensure full compatibility.

Many instances of BR-44 can be automatically corrected using Invoice Navigator's Fixer tool. Upload your invoice and the tool will identify and fix common issues, including attachment should have description.

BR-44 is commonly seen in exports from All invoicing software. These software packages sometimes generate invoices that need adjustment to meet full compliance standards.

Related Errors

Related Content

Last updated: 27 February 2026

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