Hi,

I don't think that invoice marking is correct. Although on that Telia website some Swedes translated it like that, I don't think that people in the US or the UK would understand that. On google marking an invoice refers to marking something as paid or shipped. Check out this website in Swedish that explains what fakturamärkning is in Swedish: http://www.ramirent.se/Templates/Page____390.aspx

As you will see there, it talks about a PO number an account number and a "resultatenhetsnummer". If you can find a word in English that represents those things than maybe we have solved the mystery, but I could not find it. Instead I suggested some ways to describe that an invoice lacks this information included under fakutramärkning.

Hope this helps.