The CA Dispatch started task program CAISYS01 was identified as using USERKEYCSA storage.
How can the CA Dispatch associated programs be prevented from using the USERKEYCSA storage?
CA Dispatch uses and IDMS database. Inherently, due to the way IDMS functions, you can NOT prevent the CA Dispatch related programs from using USERKEYCSA storage.
Your only option related to CA Dispatch's use of USERKEYCSA storage is to change the default storage protection key, of CVKEY=8, that the CA Dispatch programs are using.
Instructions for changing the Dispatch CVKEY are found in the following knowledge article:
Article Id: 11361
Title: SB78-5C abends starting CA Dispatch after upgrading the z/OS operating system