Peppol BIS Billing 3.0 · rule

UBL-CR-307

Layer en16931·Checked against Peppol BIS Billing 3.0 2026.5

What does UBL-CR-307 mean? A UBL invoice should not include the TaxRepresentativeParty PostalAddress Postbox

Why did my invoice fail UBL-CR-307?

cbc:Postbox inside cac:TaxRepresentativeParty/cac:PostalAddress is not part of the EN 16931 subset. A PO box, if needed, belongs in the address lines (e.g. cbc:StreetName or cbc:AdditionalStreetName) rather than a dedicated Postbox element.

Official rule text

A UBL invoice should not include the TaxRepresentativeParty PostalAddress Postbox

Common causes

PO box stored as a separate field in master data and mapped one-to-one
Assuming every UBL address child is allowed

How do I fix it?

<cac:PostalAddress>
  <cbc:StreetName>PO Box 123</cbc:StreetName>
  <cbc:CityName>Paris</cbc:CityName>
  <cbc:PostalZone>75002</cbc:PostalZone>
  <cac:Country><cbc:IdentificationCode>FR</cbc:IdentificationCode></cac:Country>
</cac:PostalAddress>

Check your invoice against this rule

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