Exits are programs that your system programmer writes to meet your installation's particular needs. These exits (and installation-defined callable services) perform tasks such as tailoring, monitoring, changing, or diagnosing ICSF. Use of such interfaces can create dependencies on the detailed design or implementation of ICSF. For this reason, use installation exits only for these specialized purposes.
For more information about ICSF exits, refer to 'Installation Exits' in z/OS Cryptographic Services ICSF System Programmer's Guide.