How do I fix BR-AF-08?

Review your Invoice XML structure and correct the issue described by this rule. Check relevant cbc: and cac: elements per EN 16931 (BR-AF-08). You can also use Invoice Navigator's compliance engine to correct this automatically in your pipeline.

Is BR-AF-08 a critical error?

Yes, BR-AF-08 is a critical error that will cause invoice rejection. It must be fixed before submission.

Can BR-AF-08 be automatically fixed?

Many instances of BR-AF-08 can be automatically corrected using Invoice Navigator's compliance engine. The fix is applied in your pipeline with full audit evidence.

errorEN 16931

`BR-AF-08`:For each IGIC VAT rate, the taxable amount must equal the sum of line net...

For each IGIC VAT rate, the taxable amount must equal the sum of line net amounts plus charges minus allowances where all use IGIC with that same rate. This is a calculation consistency check.

Severity

Fatal

Rule set

EN 16931

Country

All EU

Fix type

BLOCKED

Engine Classification

Financial or legal field · Modification blocked by policy

Reason: VAT taxable amount calculation requires verification against source documents. Incorrect amounts could result in tax filing errors and penalties.

What is BR-AF-08?

BR-AF-08 is a fatal validation rule defined in the EN 16931 specification. It checks whether for each igic vat rate, the taxable amount must equal the sum of line net....

When this rule fires, the invoice is non-compliant and will be rejected by Peppol access points and national validation services. The sending system receives a rejection response and the invoice does not reach the buyer.

This error requires manual correction — financial fields are protected by policy.Test This Error ↓

Why This Error Matters

Invoice will be rejected by validation. IGIC VAT breakdown must mathematically reconcile with line items.

BR-AF-08 is a hard failure. Invoices that trigger this rule are rejected at the access point and never reach the recipient. In Peppol networks, this means your sending system receives an MLR (Message Level Response) with a rejection status. The invoice must be corrected and re-sent, adding delay to your payment cycle.

Validator Behavior

·Causes invoice rejection
·Error returned: BR-AF-08
·Specification: EN 16931

Before / After

Failing XML

<Invoice>
  <!-- Issue: For each IGIC rate, the VAT category taxable amount must equ -->
</Invoice>

Corrected XML

<Invoice>
  <!-- Issue resolved per EN 16931 -->
</Invoice>

Technical Reference

SpecEN 16931

StrategyBLOCKED: This is a calculation mismatch. We cannot determine which value is incorrect - the taxable amount or component sums. Source system must verify calculations.

Common Causes

·Taxable amount does not match sum of IGIC components at same rate
·Components have different rates but grouped incorrectly
·Manual taxable amount does not match calculated sum
·ERP calculation error in IGIC VAT breakdown
·Rounding differences between components and total

Seeing this in production? The API handles BR-AF-08 automatically. See the fix response →

Handle BR-AF-08 Automatically in Your Pipeline

The compliance engine auto-remediates this error with controlled safety policies and evidence pack generation.

Get API Access View API Documentation

BR-AF-08:For each IGIC VAT rate, the taxable amount must equal the sum of line net...