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Warning

UBL-CR-559: A line discount or charge should not have its own VAT amount

In short

Warning: worth checking.

UBL-CR-559 means a discount or charge on an invoice line has its own VAT total (cac:TaxTotal), which EN 16931 does not use. Remove it.

On this page

What it means

The rule checks every discount or charge on a line (cac:AllowanceCharge) for a VAT total, which gives the VAT amount for that discount or charge. The test only checks that the element is present.

Why it matters

This is a warning.

How to fix it

Remove cac:TaxTotal from the discount or charge. You do not need to replace it. Check that the VAT breakdown still adds up after the change.

Once the file is corrected, check it again for free: Validate an invoice against EN 16931

Or fix the invoice in a form and download the corrected file, for 1 credit: Fix a rejected e-invoice

The rule as published

A UBL invoice should not include the InvoiceLine AllowanceCharge TaxTotal

Where this rule applies

Rule set Version
EN 16931 (UBL) 1.3.17
EN 16931 (UBL credit note) 1.3.17
XRechnung 3.0 (UBL) 3.0.2
XRechnung 3.0 (UBL credit note) 3.0.2
Peppol BIS Billing 3.0 (invoice) 2026.5
Peppol BIS Billing 3.0 (credit note) 2026.5
SI-UBL 2.0 / NLCIUS (invoice) 2.0.3.13
SI-UBL 2.0 / NLCIUS (credit note) 2.0.3.13
France CTC (UBL invoice) 1.4.0-04
France CTC (UBL credit note) 1.4.0-04
CIUS-RO UBL Invoice 1.0.9 1.0.9
CIUS-RO UBL Credit Note 1.0.9 1.0.9
Rule text from phive-rules 4.6.4.

Check your file

Drop your e-invoice to see whether UBL-CR-559 still fails, and which other rules do.

Updated 6 November 2026