DFS0771I IMS LOGGING IS NOT IN EFFECT.
Explanation
IMS LOGGING is not in effect because an extended, or symbolic, checkpoint call has been issued and the IEFRDER DD statement is missing or has been defined as DD DUMMY.
System action
If the IEFRDER DD is defined as DD DUMMY, only the message is issued and processing continues. If the IEFRDER DD statement is missing, the call continues to be processed but STATUSNL is returned in the IOPCB.
Programmer response
If logging is needed for this job, add an IEFRDER DD statement to the JCL.