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 standard identification (BT-157) contains a cac:IssuerParty block naming the party that issued the identifier. That party may be a person or an organisation. The identifier's scheme is separate from this issuer block.
Why it matters
EN 16931 does not use an issuer party within the standard item identification.
How to fix it
Remove the issuer details from the item's standard identification in your invoicing software or export mapping. Keep the identifier in cbc:ID with its schemeID, for example 0160 for a GTIN. If you build the XML yourself, delete cac:IssuerParty from cac:StandardItemIdentification under cac:InvoiceLine/cac:Item (cac:CreditNoteLine in a credit note) and keep the schemeID on cbc:ID.
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 StandardItemIdentification IssuerParty 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-586 still fails, and which other rules do.
Related rules
- UBL-CR-587 Catalogue item identifiers are not used on invoice lines
- UBL-CR-588 Additional item identifiers are not used on invoice lines
- UBL-CR-589 Catalogue document references are not used on invoice lines
- UBL-CR-590 Item specification references should not be inside the item
- UBL-CR-591 The item's country of origin should not include a name
- UBL-CR-592 Commodity nature codes are not used on invoice lines