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PEPPOL-EN16931-R100 - Only one invoiced object identifier per line

An invoice line may reference a single invoiced object (BT-128), for example a subscription or a meter number. Several references on the same line cannot be interpreted.

PEPPOL-EN16931-R100 - Only one invoiced object identifier per line

An invoice line may reference a single invoiced object (BT-128), for example a subscription or a meter number. Several references on the same line cannot be interpreted. This is a Peppol BIS Billing 3.0 rule. It applies on top of the EN 16931 core standard, on invoices exchanged over the Peppol network.

ReferencesPeppol BIS 3.0BT-128 Error
This is a Peppol BIS Billing 3.0 rule. It applies on top of the EN 16931 core standard, on invoices exchanged over the Peppol network.

What this rule checks

An invoice line may reference a single invoiced object (BT-128), for example a subscription or a meter number. Several references on the same line cannot be interpreted.

How to fix it

Keep one cac:DocumentReference in the cac:InvoiceLine and remove the extra ones.

Validate against this rule

This rule is part of EN 16931. Check your invoice with the validator that matches your format:

UBL / PeppolXRechnungFactur-X / ZUGFeRD

Related rules

BR-52Each supporting document needs a referenceBR-55Each preceding invoice reference needs a numberPEPPOL-EN16931-R003A buyer reference or a purchase order reference is requiredPEPPOL-EN16931-R080Only one project reference at document levelPEPPOL-EN16931-R101Line document reference must be the invoiced objectBR-DE-21Specification identifier should be the XRechnung one

Source: OpenPeppol BIS Billing 3.0 · Last verified: 2026-07-10

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