Erwann Abalea wrote:
There is no "exact" semantics for this attribute. ETSI EN 319412-1 has a proposed one that is to be used in the eIDAS context (using national trade register number or a national VAT number), but this semantics is not mandatory.
Especially this definition is not complete because at least here in Germany not every company has a trade register number (no "Handelsregistereintrag") or has a EU VAT number. And regarding uniqueness german tax numbers for companies are a different story...
Ciao, Michael.