DE-R-027
"Seller contact telephone number" (BT-42) should contain a valid telephone number. A valid telephone should consist of 3 digits minimum.
What does this rule mean?
The seller telephone number (BT-42) has fewer than three digits.
XRechnung requires a plausible telephone number with at least three digits.
- BT-42
- Seller contact telephone number
Official rule message (standard)
"Seller contact telephone number" (BT-42) should contain a valid telephone number. A valid telephone should consist of 3 digits minimum.
Where the rule applies
Syntax: UBL
Affected element (XPath):
(/ubl-invoice:Invoice/cac:AccountingSupplierParty/cac:Party/cac:Contact | /ubl-creditnote:CreditNote/cac:AccountingSupplierParty/cac:Party/cac:Contact)[$supplierCountryIsDE and $customerCountryIsDE]
Technical test
The rule passes when this Schematron expression holds true:
matches(normalize-space(cbc:Telephone), $XR-TELEPHONE-REGEX)How to fix it
A missing or incorrect business entry only you can supply. Add or correct it, then re-check.
Enter a complete telephone number.
Correct the affected entry in your XML, then re-check the invoice. Validation runs locally in your browser — your file never leaves your machine.
Check an e-invoice here
Drop an XML or ZUGFeRD PDF file here. Validation runs locally in your browser against EN 16931 — your file never leaves your machine.