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Warning

UBL-CR-339: No service provider party for the tax representative

In short

Warning: worth checking.

UBL-CR-339 means the seller's tax representative has a service provider party (cac:ServiceProviderParty), which EN 16931 does not use. Remove the block.

On this page

What it means

The rule flags a cac:ServiceProviderParty under cac:TaxRepresentativeParty. In UBL this is a service provider linked to the tax representative, with its own name, address and account details. EN 16931 has no field for it. The tax representative itself is described only by a name (BT-62), a VAT number (BT-63) and a postal address (BG-12). The check is the same for invoices and credit notes.

Why it matters

EN 16931 does not use a service provider party within the tax representative's details.

How to fix it

Leave the service provider details out of the tax representative's XML export. If the information matters, agree another way to tell the recipient, as EN 16931 does not use this element. If you build the XML yourself, delete cac:ServiceProviderParty from cac:TaxRepresentativeParty. 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 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-339 still fails, and which other rules do.

Updated 6 November 2026