IEF352I

Explanation
When ending a batch job, started task, or TSO user,
the initiator/terminator found that this address space had been used
to provide services to other address spaces through space-switching
PC routines. In order to maintain system integrity, the address space
is ended and is marked as unavailable. This does not necessarily indicate
an error in the program or in the initiator.

System action
The system ends the current job, started task,
or TSO user normally.  The address space is also ended and the address
space identifier (ASID) is marked as unavailable.  This ASID might
be temporarily or permanently unavailable.  If a batch job caused
this situation to occur, the initiator in this address space will
be ended and then automatically restarted in another address space.

System programmer response
Determine which program established
the outstanding space switch entries. If it is determined that no
error exists, then no action needs to be taken.  If an error does
exist, search problem reporting data bases for a fix for the problem.
 If no fix exists, contact the IBM® Support
Center.
Note: If batch jobs, started tasks, or TSO users that create
unusable ASIDs end enough times, they will exhaust all available ASIDs
and an IPL will be required. When IPLing is not an acceptable option,
determine which programs caused the problems and fix them. Contact
the IBM Support Center for information about fixing
these programs.
For methods that prevent running out of ASIDs,
see z/OS MVS Programming: Extended Addressability Guide. 

Source
Initiator/terminator

Module
IEFSD166

Routing code
2,11

Descriptor code
6