DE-R-028
"Seller contact email address" (BT-43) should contain exactly one @-sign, which should not be framed by a whitespace or a dot but by at least two characters on each side. A dot should not be the first or last character.
What does this rule mean?
The seller email address (BT-43) is not well-formed.
XRechnung requires exactly one @ with no surrounding spaces or punctuation.
- BT-43
- Seller contact email address
Official rule message (standard)
"Seller contact email address" (BT-43) should contain exactly one @-sign, which should not be framed by a whitespace or a dot but by at least two characters on each side. A dot should not be the first or last character.
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:ElectronicMail), $XR-EMAIL-REGEX)How to fix it
A missing or incorrect business entry only you can supply. Add or correct it, then re-check.
Correct the email address (e.g. [email protected]).
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.