Job DBDEF to define the CA DISK database in Datacom Datadictionary fails in the DDUPDAT step with a S0C4 abend in DDUPDATE OFFSET=0000066A .
The job log also shows
($LDM) LOAD MODULE ERROR
Release : 15.1
Component : Datacom/AD
Component: DISK BACKUP AND RESTORE
Datacom/AD CUSLIB is missing in the STEPLIB
ADD the DATACOM/AD CUSLIB in member DMSSTPLB.
$LDM stands for load module and it got an error. This means that a module cannot be found , usually DDSRTLM. This module resides in the Datacom/AD CUSLIB.