ValidateFin

BR-28 - Item gross price must not be negative

The item gross price (BT-148) must not be negative.

BR-28 - Item gross price must not be negative

The item gross price (BT-148) must not be negative.

Invoice linesEN 16931BT-148 Error

What this rule checks

The item gross price (BT-148) must not be negative.

How to fix it

Use a non-negative gross price; apply reductions via the item price discount (BT-147).

Validate against this rule

This rule is part of EN 16931. Check your invoice with the validator that matches your format:

UBL / PeppolXRechnungFactur-X / ZUGFeRD

Related rules

BR-21Each invoice line needs an identifierBR-22Each invoice line needs a quantityBR-23Each invoice line needs a unit of measureBR-24Each invoice line needs a net amountBR-25Each invoice line needs an item nameBR-26Each invoice line needs a net price

Source: CEN EN 16931 Schematron · Last verified: 2026-07-10

All validation rules