Welcome to the forums and thank you for posting. Please make sure that the power specifications for the machine you are buying will work in your area. You would register the product on the Xerox.com site for your country. Not sure what documents you might need. Make sure have the serial number for the machine as you will need that to register. Here is a solution that will instruct you on where to find the serial number. Please consider contacting your support centre for further assistance.
Thanks, CherylO-Xerox Community Manager
Be sure to click Kudos for those who have helped you. Select Accept as Solution for posts that have helped to solve your issue(s)!