What it means
The rule checks every line, or credit note line, for a document reference that contains an issuer party, meaning the party that issued the document the line refers to. The test only checks that the element is present, whatever name or details it holds.
Why it matters
This is a warning. The standard defines no issuer for a line reference. It is worth fixing when the recipient needs to know where the referenced document came from.
How to fix it
Remove cac:IssuerParty from the line's document reference. If the issuer matters, name it in the line description or in a note on the invoice. If you build the XML yourself, the element sits under cac:DocumentReference in 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 DocumentReference 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-546 still fails, and which other rules do.
Related rules
- UBL-CR-547 A line's document reference should not hold a verification result
- UBL-CR-548 A line should not contain a pricing reference
- UBL-CR-549 A line should not name an originator party
- UBL-CR-550 A line should not carry its own delivery details
- UBL-CR-551 A line should not carry its own payment terms
- UBL-CR-552 A line discount or charge should not have an identifier