The purpose of this part is to achieve the efficiencies and fungibility through use of a single system for transferring interests both in Ginnie Mae Securities and other United States Government securities and in mortgage-backed securities issued by the Federal National Mortgage Association and the Federal Home Loan Mortgage Corporation. The Association only guarantees that payments required to be made by issuers of Ginnie Mae Securities will be made to the registered owner of those Ginnie Mae Securities. The Association undertakes no other obligation. Under the Book-entry System, the Federal Reserve Banks will be the registered owner of Book-entry Ginnie Mae Securities, not the agent of the Association, and the Association makes no warranty or guaranty with respect to the maintenance of the Book-entry System by the Federal Reserve Banks.