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Warning

UBL-CR-259: Leave the buyer's service provider party out

In short

Warning: worth checking.

UBL-CR-259 means the buyer's party block includes a party providing services to the buyer (ServiceProviderParty), which EN 16931 does not use. Remove that ServiceProviderParty block.

On this page

What it means

This rule checks the buyer's party block in a UBL invoice or credit note (cac:AccountingCustomerParty, cac:Party). It must not contain cac:ServiceProviderParty, a nested party description for a service provider linked to the buyer. An EN 16931 invoice names one buyer (BG-7).

Why it matters

The rule excludes service provider party blocks from the buyer's party details. The check applies regardless of the service provider's role or relationship to the buyer.

How to fix it

Configure your UBL export to omit service provider party blocks linked to the buyer. If the export cannot do that, ask your software supplier to change it. If you edit or generate the XML, remove every cac:ServiceProviderParty from cac:AccountingCustomerParty/cac:Party. 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 ServiceProviderParty

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
Rule text from phive-rules 4.6.4.

Check your file

Drop your e-invoice to see whether UBL-CR-259 still fails, and which other rules do.

Updated 6 November 2026