Cryptographic Services documented at:
document the actions to perform before the first IPL of z/OS V2R3 This topic describes Cryptographic Services migration actions that you can perform after you have installed z/OS V2R3, but before the first time you IPL. These actions might require the z/OS V2R3 level of code to be installed, but do not require it to be active. Are there any other concerns?
Component : CA Top Secret for z/OS