The CAIRIMU Utility received a SYSTEM COMPLETION CODE=66D REASON CODE=00000008 when it was started from a TSO CLIST
The S66D is a TSO abend which is issued during a failure in CLIST processing. The Reason Code 08 indicates that the CLIST failure is a result of a S0C4 abend encountered during execution.
In this case CAS9/CAIRIM had not been executed on this system before the CAIRIMU CLIST was attempted.
Ensure that the CAS9/CAIRIM task has been executed prior to running this utility in any form.
Details of the use of the CAIRIMU utility can be found in the Common Services for z/OS Documentation wiki.