Ask a Business Lawyer. Get Business Law Questions Answered ASAP.
From what I can make of the link you sent me it's Part 3 section 3 that relates to my situation however I am still not certain on how I'm implicated by it.
Essentially what I really want to know is 'according to this law do I definitely have to give the details they requested?' The reason I ask is that other Italian clients of mine haven't gone through this process with me so I don't see the necessity of going through this process with this client.