For sale of a timeshare, both parties must reveal a Social Security number. This is usually done with a copy of the Social Security card or birth certificate.
This contract details the exact information pertaining to the transfer of the timeshare. It shows the address of the unit, the resort to which it's attached and other critical facts.
Once the contract is signed by both parties, you can pass the deed to the new owner. This shows that the buyer has purchased the timeshare.
This document shows that insurance on the property is currently paid and is up to date. Not all buyers insist on this document, but many do.
A deed of sale or sales document shows that the timeshare has exchanged hands. It should also be filed with the resort where the timeshare is located.