CII-SR-155: Leave out the product unit quantity on an invoice line

What it means

The rule checks the delivery block of each invoice line. It must not contain a ProductUnitQuantity, a count of product units kept apart from the invoiced quantity (BT-129). The standard reads only the invoiced quantity.

Why it matters

This is a warning, so the invoice goes through. A second quantity that the standard does not define is likely to be ignored by the recipient. If it differs from the invoiced quantity, it adds confusion and no value.

How to fix it

Disable the unit count option in the e-invoice export of your invoicing software. Check that the invoiced quantity (BT-129) and its unit of measure are what you charge for. If the buyer needs a count of units, give it in the item description (BT-154).

The rule as published

ProductUnitQuantity should not be present

Where this rule applies