PEPPOL-EN16931-CL006

Layer peppol·Checked against Peppol BIS Billing 3.0 2026.5

What does PEPPOL-EN16931-CL006 mean? Invoice period description code must be according to UNCL 2005 D.16B.

Why did my invoice fail PEPPOL-EN16931-CL006?

The invoice period description code must come from UN/CEFACT code list UNCL 2005 (D.16B), which defines date/period qualifiers. In practice this is the cbc:DescriptionCode inside cac:InvoicePeriod used to state the VAT tax point (e.g. 3 = invoice issue date, 35 = delivery date, 432 = paid-to date). Restricting it to the code list keeps the tax point machine-readable.

Official rule text

Invoice period description code must be according to UNCL 2005 D.16B.

Common causes

Using a code outside the allowed UNCL 2005 subset
Putting descriptive text instead of a numeric code in cbc:DescriptionCode
Confusing the period description code with the invoice type code

How do I fix it?

<cac:InvoicePeriod><cbc:DescriptionCode>35</cbc:DescriptionCode></cac:InvoicePeriod>

Check your invoice against this rule

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