SMP/E uses HTTP to communicate with the IBM® Automated Delivery Request server, and it uses FTP to download package files containing PTFs and HOLDDATA from an IBM FTP server to your local z/OS® system. After the package files are staged to the IBM FTP server, the IBM Automated Delivery Request server provides SMP/E with the information it needs to login to the FTP server and download the package files. Specifically, it provides SMP/E with the FTP server host name, and a user ID and password for that FTP server which are unique for the specific package to be downloaded.