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Rules/Peppol BIS Billing 3.0/Warning

DE-R-028

Peppol BIS Billing 3.0.21

If both supplier and customer are located in Germany, "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.

Official rule text

This rule has no plain-English explanation of our own yet. The official text above is exact.

A warning does not make the document invalid. Receivers may still act on it, so it is worth fixing.

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