Tools › SmartFormular E-Rechnung lite › Validation rules › BR-DE-28
BR-DE-28
The contact email address (BT-43) is missing or looks invalid
What the message means
The contact email address (BT-43) is missing or looks invalid.
What the issuer needs to change
Check the email address.
Fields concerned
BT-43seller contact email address
Your invoice reports BR-DE-28? Check it with SmartFormular E-Rechnung lite, free to try until 31 December 2026: the tool shows every finding with an explanation, the invoice in readable form and a GiroCode to pay – in your browser, no upload.
Check an e-invoiceOrigin
- Rule set
- XRechnung 3.0.2 (KoSIT, Schematron 2.6.0)
- Syntax
- CII, UBL
- Level
- Warning
Original rule text
In BT-43 soll genau ein @-Zeichen enthalten sein, welches nicht von einem Leerzeichen, einem Punkt, aber mindestens zwei Zeichen auf beiden Seiten flankiert werden soll. Ein Punkt sollte nicht am Anfang oder am Ende stehen.
Technical details for IT
UBL
Context: /ubl:Invoice/cac:AccountingSupplierParty/cac:Party/cac:Contact | /cn:CreditNote/cac:AccountingSupplierParty/cac:Party/cac:Contact Test: not(matches(normalize-space(cbc:ElectronicMail), $XR-EMAIL-REGEX))
CII
Context: /rsm:CrossIndustryInvoice/rsm:SupplyChainTradeTransaction/ram:ApplicableHeaderTradeAgreement/ram:SellerTradeParty/ram:DefinedTradeContact Test: not(matches(normalize-space(ram:EmailURIUniversalCommunication/ram:URIID), $XR-EMAIL-REGEX))
Related rules
- BR-DE-25-bWith direct debit, transfer or card details are also given
- BR-DE-26A corrected invoice (code 384) does not name the original invoice (BG-3)
- BR-DE-27The contact telephone number (BT-42) is missing or has fewer than three digits
- BR-DE-30Missing for the direct debit: bank assigned creditor identifier (BT-90)
- BR-DE-31Missing for the direct debit: debited account identifier (BT-91)
- BR-DE-TMP-32The invoice gives no actual delivery date (BT-72) and no invoicing period (BG-14 or BG-26 per line)