BR-DE – XRechnung

BR-DE-2: seller contact (BG-6) missing in the XRechnung

ErrorXRechnung business rule (KoSIT)

Official message

[BR-DE-2] Die Gruppe "SELLER CONTACT" (BG-6) muss übermittelt werden.

Source: KoSIT XRechnung, version 3.0.2 (Schematron 2.6.0)

What the message means

The invoice names nobody to contact at the issuer. XRechnung requires a contact for every seller, with a name, a telephone number and an e-mail address, so that the recipient can reach someone with a question instead of rejecting the invoice. When the whole contact group is missing, the invoice counts as incomplete and the recipient rejects it even if every amount is right.

How to fix it

Add a Contact block to the seller and fill in name, telephone and e-mail. All three are mandatory in XRechnung; an empty group does not satisfy the rule.

Before – invalid

<cac:AccountingSupplierParty>
  <cac:Party>
    <cac:PartyName><cbc:Name>Muster GmbH</cbc:Name></cac:PartyName>
  </cac:Party>
</cac:AccountingSupplierParty>

After – corrected

<cac:AccountingSupplierParty>
  <cac:Party>
    <cac:PartyName><cbc:Name>Muster GmbH</cbc:Name></cac:PartyName>
    <cac:Contact>
      <cbc:Name>Anna Beispiel</cbc:Name>
      <cbc:Telephone>+49 30 1234560</cbc:Telephone>
      <cbc:ElectronicMail>[email protected]</cbc:ElectronicMail>
    </cac:Contact>
  </cac:Party>
</cac:AccountingSupplierParty>

Frequently asked

What must the seller contact of an XRechnung contain?

The name of a person or department, a telephone number and an e-mail address. Each is a mandatory field of its own (BT-41, BT-42, BT-43); a shared mailbox is acceptable.

Is the telephone number printed on the invoice PDF enough?

No. The recipient processes only the XML data. Contact details that appear only on the PDF or in a cover letter are invisible to the automated check.

Also seen when …

No contact person is stored in the company master data of the invoicing software.
The software exports the company name and address but no contact block into the XML file.
The contact details sit in free text or on the PDF instead of the dedicated fields.

Fields concerned

BG-6

Related rules

Check your invoice

The XRechnung validator reports this rule with the line number and location – right in your browser, without upload.

Open the XRechnung validator

Technical details

UBL · Context (XPath): /ubl:Invoice/cac:AccountingSupplierParty | /cn:CreditNote/cac:AccountingSupplierParty
UBL · Schematron test: cac:Party/cac:Contact
CII · Context (XPath): /rsm:CrossIndustryInvoice/rsm:SupplyChainTradeTransaction/ram:ApplicableHeaderTradeAgreement/ram:SellerTradeParty
CII · Schematron test: ram:DefinedTradeContact

Explanation written on 14 September 2026