After applying the latest maintenance R20.0.1 to one of the Db2 systems the following message is received
" IKJ56703A REENTER THIS OPERAND" - while accessing IS option from main panel.
Release : 20.0
Component : CA SYSVIEW Performance Management Option for DB2 for z/OS
Run the customization process for the INSIGHT Clist which is part of the post install run.