Use the SET control statements to specify data to send to a KGUP installation exit. For a more detailed description of the SET statement, see z/OS Cryptographic Services ICSF Administrator’s Guide.

The installation data field in KGXP (offset +396) contains the address of the data SET statement specifies. Data that is specified on a SET statement can be especially useful if you alter key entries. You may want to keep track of the entries you change by putting the original data and the changed data in the installation data area.