System SSL is part of the System SSL Cryptographic Services Base element of z/OS®. If you choose to install the z/OS Version 2 Release 1 Server Pack, you do not need to install the System SSL Cryptographic Services Base element separately. If you choose the z/OS Custom-Build Product Delivery Offering (CBPDO), you can install the System SSL Cryptographic Services Base element using SMP/E. The z/OS Program Directory contains the directions for installing the System SSL Cryptographic Services Base element using SMP/E.