What it means
EN 16931 carries a company registration number for the seller (BT-30) and the buyer (BT-47), but not for the seller's tax representative (BG-11). The rule flags a cac:PartyLegalEntity under cac:TaxRepresentativeParty, which can hold a registered name, a company registration number and a legal form. For the tax representative the standard only has a name, a VAT number and an address. It applies to invoices and credit notes.
Why it matters
EN 16931 does not use a legal entity block for the seller's tax representative (BG-11).
How to fix it
Leave the tax representative's legal entity details out of the XML export. If you build the XML yourself, delete cac:PartyLegalEntity from cac:TaxRepresentativeParty. You do not need to delete the details from your software's stored records to clear this warning. Recheck the exported file.
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 TaxRepresentativeParty PartyLegalEntity 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-335 still fails, and which other rules do.
Related rules
- UBL-CR-336 No contact details for the tax representative
- UBL-CR-337 No person details for the tax representative
- UBL-CR-338 No agent party for the tax representative
- UBL-CR-339 No service provider party for the tax representative
- UBL-CR-340 No power of attorney for the tax representative
- UBL-CR-341 No bank account for the tax representative