Peppol BIS Billing 3.0 · rule

UBL-CR-665

Layer en16931·Checked against Peppol BIS Billing 3.0 2026.5

What does UBL-CR-665 mean? A UBL invoice should not include the AdditionalDocumentReference ID schemeID unless the DocumentTypeCode equals '130'

Why did my invoice fail UBL-CR-665?

The schemeID attribute on cac:AdditionalDocumentReference/cbc:ID should only be used when the reference is an invoiced object identifier, i.e. when cbc:DocumentTypeCode equals '130'. For any other additional document reference the attribute has no defined meaning in EN 16931 and should be omitted.

Official rule text

A UBL invoice should not include the AdditionalDocumentReference ID schemeID unless the DocumentTypeCode equals '130'

Common causes

schemeID set on a reference to an attached document instead of an invoiced object
DocumentTypeCode 130 missing while schemeID is present
Serializer adds schemeID to every document reference ID

How do I fix it?

<cac:AdditionalDocumentReference>
  <cbc:ID schemeID="ABZ">DR35141</cbc:ID>
  <cbc:DocumentTypeCode>130</cbc:DocumentTypeCode>
</cac:AdditionalDocumentReference>

Check your invoice against this rule

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