What it means
This rule checks the buyer's legal entity block in a UBL invoice or credit note (cac:AccountingCustomerParty, cac:Party, cac:PartyLegalEntity). It must not contain cbc:SoleProprietorshipIndicator, a true or false value indicating whether the buyer is a sole proprietor.
Why it matters
The element triggers this warning whether its value is true or false. The check requires its absence, not a different flag value.
How to fix it
Configure your UBL export to omit the buyer's sole proprietorship flag. Setting it to false or leaving it empty does not clear this warning. If you edit or generate the XML, remove cbc:SoleProprietorshipIndicator from cac:AccountingCustomerParty/cac:Party/cac:PartyLegalEntity. Recheck the file in Klarbon.
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 AccountingCustomerParty Party PartyLegalEntity SoleProprietorshipIndicator 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-245 still fails, and which other rules do.
Related rules
- UBL-CR-246 Leave the buyer's liquidation status out
- UBL-CR-247 Leave the buyer's share capital amount out
- UBL-CR-248 Leave the buyer's fully paid shares flag out
- UBL-CR-249 Leave the buyer's company registration address out
- UBL-CR-250 Leave the buyer's corporate registration scheme details out
- UBL-CR-251 Leave the buyer's head office party out