XRechnung error BR-DE-6: seller contact telephone missing
BR-DE-6 requires the seller contact telephone number (BT-42). It is part of the seller contact group (BG-6), which XRechnung makes mandatory (see BR-DE-2).
Last updated: 2026-06-01
Affected field
cac:Contact/cbc:Telephone (UBL) / ram:DefinedTradeContact/ram:TelephoneUniversalCommunication/ram:CompleteNumber (CII)
Cause
The seller's Contact element has no telephone field. EN 16931 leaves it optional — XRechnung makes it mandatory.
Fix
Add a telephone number in cbc:Telephone under cac:Contact (e.g. '+49 30 1234567'). KoSIT recommends at least three digits (BR-DE-27).
<cac:Contact> <cbc:Name>Accounts Receivable</cbc:Name> <cbc:ElectronicMail>billing@example.de</cbc:ElectronicMail> </cac:Contact>
<cac:Contact> <cbc:Name>Accounts Receivable</cbc:Name> <cbc:Telephone>+49 30 1234567</cbc:Telephone> <cbc:ElectronicMail>billing@example.de</cbc:ElectronicMail> </cac:Contact>
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Frequently asked questions
Is the telephone number really mandatory in XRechnung?▼
Yes. Unlike core EN 16931, XRechnung makes the contact group (BG-6) and all three fields — contact point (BT-41), telephone (BT-42) and email (BT-43) — mandatory.
Can I use a central phone number?▼
Yes. A general billing-department number is sufficient; it does not need to be a named person's direct line.