What it means
The rule checks the seller party (cac:AccountingSupplierParty/cac:Party) and fails when it holds a cac:Person, a block with personal details such as first name, family name or job title. EN 16931 has no person block for the seller. The name of someone to contact goes in the contact name (BT-41), and the name of the seller itself in the seller name (BT-27).
Why it matters
This is only a warning, so the invoice is still accepted. The recipient reads the seller's name and contact from the standard fields. A Person block is ignored, so nobody sees the details in it, and it adds personal data that is not needed.
How to fix it
Remove cac:Person from cac:AccountingSupplierParty/cac:Party. Put the name of the person to contact in cac:Contact/cbc:Name. If you are a sole trader, your name belongs in the seller name (BT-27), in cbc:RegistrationName in the legal entity block. It is worth fixing when a name exists only in the Person block, because the recipient will not see it.
The rule as published
A UBL invoice should not include the AccountingSupplierParty Party Person 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-193 still fails, and which other rules do.