BR-DE-28

This is a warning, so the document is not rejected, but the rule recommends that the supplier contact email in BT-43 (cbc:ElectronicMail in UBL, ram:URIID in CII) have a plausible email shape. The test accepts values with no whitespace, exactly one @, at least one non-whitespace character before @, and after @ a domain that contains at least one dot with at least one non-dot/non-space character before each dot and no dot immediately after @ or at the end. A value fails if it is empty or only whitespace, has no @ or more than one @, contains spaces, or lacks a dotted domain after @ with non-empty labels.

Set the email address in BT-43 to a value that contains exactly one @, no spaces, at least one character before @, and a domain after @ like example.com with at least one dot and non-empty labels. Check for hidden whitespace or extra @ characters. If the email looks correct, verify that you are editing the correct cbc:ElectronicMail or ram:URIID element in the supplier contact.