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Warning

UBL-CR-635: A discount multiplier does not belong inside the line price

In short

Warning: worth checking.

UBL-CR-635 means a cac:AllowanceCharge block inside an invoice or credit note line's price contains a multiplier (cbc:MultiplierFactorNumeric). Remove the multiplier and keep the price discount amount (BT-147).

On this page

What it means

The rule checks every cac:Price/cac:AllowanceCharge on invoice and credit note lines for cbc:MultiplierFactorNumeric. The price discount amount (BT-147) and price before the discount (BT-148) are separate fields. The percentage of a discount directly under the line has its own field (BT-138) and is outside this check.

Why it matters

EN 16931 represents a price discount with an amount, not a multiplier within the price discount block.

How to fix it

Remove cbc:MultiplierFactorNumeric from cac:AllowanceCharge inside cac:Price in each affected cac:InvoiceLine or cac:CreditNoteLine. Keep the correct price discount amount (BT-147) and price before the discount (BT-148). If you need to show the percentage without changing the calculation, write it in the line note (BT-127). Do not add the same discount again at line level. Export the corrected file and recheck it.

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 Item Price AllowanceCharge MultiplierFactorNumeric

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-635 still fails, and which other rules do.

Updated 6 November 2026