After running the CAUNZIP utility I notice that data sets used for work files (eg. SYSUT2, SYSUT3, and SYSUT4) are not being deleted at the completion of the utility. I do not remember seeing this behavior in the past.
Changes introduced in CAIRIM r14.1 PTF RO88019 to resolve a security concern led to changes that exposed this concern. An additional change was needed so that these data sets were given a disposition to cause them to be deleted when the CAUNZIP processing is completed.
Download and install CAIRIM r14.1 PTF RO93537