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E-Invoice Validator

PEPPOL-EN16931-R120

MistakeUBLCII

What that means

The item net amount does not correspond to quantity × unit price (plus surcharges/discounts for the item).

Here's how to fix it

Check the position calculation - it is often due to a price base quantity (BT-149) or decimal places.

Official rules text

Invoice line net amount MUST equal (Invoiced quantity * (Item net price/item price base quantity) + Sum of invoice line charge amount - sum of invoice line allowance amount

Rules and regulations

Does this error appear in your invoice?

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  • Official EN 16931 regulations
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Official rule sets up to date: EN 16931 1.3.17 · Peppol BIS 3.0.20 · XRechnung 3.0.2 (KoSIT 2.6.0). Last checked against the sources on 12.10.2026.