DE-R-028: "Seller contact email address" (BT-43) should contain exactly one @-sign, which should…

Original rule text

"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.

matches(normalize-space(cbc:ElectronicMail), $XR-EMAIL-REGEX)

DE-R-028 is a warning rule in the country layer of Peppol BIS Billing 3.0.18 · UBL. An invoice that breaks it is flagged but not rejected. It refers to BT-43.

Where to go next

DE-R-028 changed in 2 published Peppol BIS Billing UBL release comparisons:

• DE-R-028 in 3.0.20 → 3.0.21: Behaviour changed without the rule changing
• DE-R-028 in 3.0.17 → 3.0.18: New rule

Validate an invoice against these rules · All release changes