Peppol BIS Billing 3.0 · rule

UBL-CR-294

Layer en16931·Checked against Peppol BIS Billing 3.0 2026.5

What does UBL-CR-294 mean? A UBL invoice should not include the BuyerCustomerParty

Why did my invoice fail UBL-CR-294?

The cac:BuyerCustomerParty element is not used in EN 16931 and should not appear. The buyer (BG-7) is carried exclusively in cac:AccountingCustomerParty, so a separate BuyerCustomerParty duplicates or contradicts the model's single buyer structure.

Official rule text

A UBL invoice should not include the BuyerCustomerParty

Common causes

Mapping ordering-party data from an Order document into BuyerCustomerParty
Confusing UBL's ordering roles with the accounting roles the EN 16931 invoice uses
Legacy templates that populate both AccountingCustomerParty and BuyerCustomerParty

How do I fix it?

<cac:AccountingCustomerParty>
  <cac:Party>
    <cac:PartyLegalEntity><cbc:RegistrationName>Buyer d.o.o.</cbc:RegistrationName></cac:PartyLegalEntity>
  </cac:Party>
</cac:AccountingCustomerParty>

Check your invoice against this rule

Paste it into the live demo, or call POST /v1/validate. See the quickstart.