E-invoice / Rules / PEPPOL-EN16931-R110

E-invoice rule Peppol BIS Billing 3.0

PEPPOL-EN16931-R110: Line 1: the line period starts (…) before

Line 1: the line period starts (…) before the invoicing period starts (2026-09-01).

Original wording of the rule

Start date of line period MUST be within invoice period.

Source of the quotation: Peppol BIS Billing 3.0 (OpenPEPPOL, peppol-bis-invoice-3)

How to fix it

1. Open the XML file and find the element cac:InvoicePeriod/cbc:StartDate.
2. Add or correct the element the way the wording of the rule above asks for.
3. Save the file and check it again with our checker. It runs in your browser, the file is never uploaded.

A correct UBL 2.1 snippet

<cac:InvoicePeriod
    xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2"
    xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2">
  <cbc:StartDate>2026-08-01</cbc:StartDate>
</cac:InvoicePeriod>

The snippet is only the part of the document the rule is about. Put it in the right place inside your invoice; the namespaces are written here only so that the snippet reads on its own.

When it is reported

Profile: Peppol BIS Billing 3.0

How we rate it: error

Where we point in the file: /Invoice/cac:InvoiceLine[1]/cac:InvoicePeriod/cbc:StartDate

Related rules

• PEPPOL-EN16931-R100 Line 1: only one invoice line object reference (cac:DocumentReference)
• PEPPOL-EN16931-R101 Line 1: inside a line, cac:DocumentReference is only used
• PEPPOL-EN16931-R111 Line 1: the line period ends (…) after the invoicing period ends
• PEPPOL-EN16931-R120 Line 1: the line net amount should be quantity 6 times price 45 divided
• PEPPOL-EN16931-R121 Line 1: the item price base quantity

Our check is not complete: we do not check the XSD schema and we do not implement every rule, and a file that passes says nothing about whether the buyer or the Peppol network will accept it. Licences for the quoted wordings are listed in our sources.