Skip to content

Warning

CII-SR-051: Remove the separate product net weight element

In short

Warning: worth checking.

CII-SR-051 warns that a CII invoice line contains ram:NetWeightMeasure in its product details. Remove this element. If you need to retain the product's weight without packaging, use an item attribute (BG-32) or the item description (BT-154).

On this page

What it means

The test checks that the line's ram:SpecifiedTradeProduct, representing item information (BG-31), has no direct ram:NetWeightMeasure child.

Why it matters

EN 16931 does not map this separate product weight element. A product's net weight is not necessarily the quantity you invoice, so the two should not be treated as interchangeable.

How to fix it

Remove ram:NetWeightMeasure from the exported product details. Retain any useful weight and its unit in an item attribute (BG-32) or ram:Description (BT-154). Keep the invoiced quantity (BT-129) and its unit of measure (BT-130) consistent with what you actually sold. Export the revised file and check it again.

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

NetWeightMeasure should not be present

Where this rule applies

Rule set Version
EN 16931 (CII) 1.3.17
XRechnung 3.0 (CII) 3.0.2
NLCIUS (CII) 1.0.3.13
France CTC (CII) 1.4.0-04
Rule text from phive-rules 4.6.4.

Check your file

Drop your e-invoice to see whether CII-SR-051 still fails, and which other rules do.

Updated 6 November 2026