The administration in Denmark is a recognised leader (EC award for eGov readiness) and was demonstrated through its application of the eInvoice.
The GS1 GLN, whilst being a small part of the total solution, was, nevertheless, an important tool in uniquely identification legal entities, physical locations and as an EDI routing key.
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http://gs1denmark.net.dynamicweb.dk/Default.aspx?ID=348