What it means
The check looks at the item on every invoice or credit note line. None of them should contain a cbc:PackSizeNumeric element. In UBL this is the number of units in one pack, such as 12 bottles in a box. EN 16931 has no business term for it.
Why it matters
The EN 16931 UBL rules do not use this separate pack size element on invoice or credit note lines.
How to fix it
Ask your software supplier to leave cbc:PackSizeNumeric out of the invoice export. If the buyer should see the pack size, add it to the item description instead, for example Water 0.5 l, pack of 12. If you build the XML yourself, delete cbc:PackSizeNumeric from cac:Item in each cac:InvoiceLine or cac:CreditNoteLine.
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 PackSizeNumeric 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 |
Check your file
Drop your e-invoice to see whether UBL-CR-564 still fails, and which other rules do.
Related rules
- UBL-CR-565 The item on a line should not carry a catalogue flag
- UBL-CR-566 The item on a line should not carry a hazard flag
- UBL-CR-567 The item on a line should not carry additional information
- UBL-CR-568 The item on a line should not carry search keywords
- UBL-CR-569 The item on a line should not carry a brand name
- UBL-CR-570 The item on a line should not carry a model name