Value MUST be part of code list 'Mime code (IANA Subset)'.
/ubl:OrderResponse/cac:OrderLine/cac:LineItem/cac:Item/cac:ItemSpecificationDocumentReference/cac:Attachment/cbc:EmbeddedDocumentBinaryObjectnot(@mimeCode) or (some $code in $clMimeCode satisfies $code = @mimeCode)