Warning

UBL-CR-558: A line discount or charge should not have its own VAT category

In short

Warning: worth checking.

UBL-CR-558 means a discount or charge on an invoice line has its own VAT category (cac:TaxCategory), which EN 16931 does not use. Remove it.

On this page

The rule checks every discount or charge on a line (cac:AllowanceCharge) for a VAT category inside it.

This is a warning.

Remove cac:TaxCategory from the discount or charge.

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

A UBL invoice should not include the InvoiceLine AllowanceCharge TaxCategory

Rule text from phive-rules 4.6.4.
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

Drop the e-invoice to check here, or choose a fileChoose the e-invoice to checkXML or a PDF with the invoice inside, up to 20 MB.

Used for this request, not archived.

Updated 6 November 2026