XRechnung (BR-DE) rules
BR-DE-15: Buyer reference (BT-10) is required
What this rule requires
Buyer reference (BT-10) is required.
ExampleXRechnung 3.0 (UBL)
An invoice built like a valid one, except for this:
<Invoice xmlns="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2" xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2" xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2">
<cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:xoev-de:kosit:standard:xrechnung_3.0</cbc:CustomizationID>
<cbc:ProfileID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</cbc:ProfileID>
<cbc:ID>INV-1001</cbc:ID>
<cbc:IssueDate>2026-01-15</cbc:IssueDate>
<cbc:InvoiceTypeCode>380</cbc:InvoiceTypeCode>
<cbc:DocumentCurrencyCode>EUR</cbc:DocumentCurrencyCode>
</Invoice>The validator says: Buyer reference (BT-10) is required and the document does not contain it.
How to fix it
Add Buyer reference to the invoice.
Frequently asked questions
- What does BR-DE-15 mean?
- Buyer reference (BT-10) is required. The rule runs under XRechnung 3.0 (UBL).
- How do I fix BR-DE-15?
- Add Buyer reference to the invoice. In UBL the element is /Invoice/cbc:BuyerReference.
Runs under these profiles
- XRechnung 3.0 (UBL)
Element path
- Buyer reference (BT-10)UBL /
Invoice/ cbc:BuyerReferenceCII / CrossIndustryInvoice/ SupplyChainTradeTransaction/ ApplicableHeaderTradeAgreement/ BuyerReferenceRead from what WorkAlio's CII parser accepts — there is no CII writer yet, so this path is not independently verified the way the UBL path is.