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Warning

UBL-CR-592: Commodity nature codes are not used on invoice lines

In short

Warning: worth checking.

UBL-CR-592 means the commodity classification of an invoice or credit note line holds a nature code (cbc:NatureCode), which EN 16931 does not use. It is a warning. Remove it. If you need to include an item classification identifier (BT-158), use cbc:ItemClassificationCode.

On this page

What it means

The rule looks at the item on every invoice line (or credit note line) in a UBL file. It warns when the item's commodity classification (cac:CommodityClassification) contains a cbc:NatureCode, a code for the nature of the goods or service. EN 16931 uses cbc:ItemClassificationCode for the item classification identifier (BT-158). This rule checks only for cbc:NatureCode.

Why it matters

EN 16931 does not use nature codes within a line's commodity classification.

How to fix it

Remove the nature code from the product's classification export in your invoicing software or export mapping. If you also need to give a classification, such as a customs tariff or procurement code, enter it as the item classification code and choose its code list. If you build the XML yourself, delete cbc:NatureCode from cac:CommodityClassification under cac:InvoiceLine/cac:Item (cac:CreditNoteLine in a credit note) and keep cbc:ItemClassificationCode with its listID if supplied.

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 CommodityClassification NatureCode

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
Rule text from phive-rules 4.6.4.

Check your file

Drop your e-invoice to see whether UBL-CR-592 still fails, and which other rules do.

Updated 6 November 2026