BR-DE-7

An email address for the seller contact (BT-43) must be transmitted.

Severity: Error
Applies to: CII, UBL
Rule set: v2026-01-31

Official rule text

Das Element "Seller contact email address" (BT-43) muss übermittelt werden.

Why it happens

Like the phone number and contact point: the address exists in the letterhead but not as a structured contact field in the data model.

How to fix it

Send the address in BT-43: cac:Contact/cbc:ElectronicMail in UBL, ram:EmailURIUniversalCommunication/ram:URIID in CII. Keep the format plausible or BR-DE-28 warns as well.

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