069

Explanation
An address space has ended. A reason code in the
SDWACRC field of the system diagnostic work area (SDWA) provides an
explanation. Code
Explanation
00
An error occurred during the creation of a new address space from
one of the following  requests: ASCRE macro
CALL IEEMB881
LOGON command
MOUNT command
START command

04
A request by the caller to destroy an ASCRE-created address space
has completed.

System action
For reason code 00, the system: Ends the new address space
Writes a dump
Writes a logrec data set error record
Issues messages

For reason code 04, the system: Ends the new address space

System programmer response
For reason code 00, do the following:
 Determine why a new address space could not be created:  If a module issued the ASCRE macro, check the return and reason
codes returned from ASCRE.  See the z/OS MVS Programming: Authorized Assembler Services Reference ALE-DYN 
for a description of the return and reason codes.
If a module did a direct call to IEEMB881 or if the operator entered
a command to create the new address space, check the return codes
returned by module IEEMB881.

If you cannot resolve this problem, search problem reporting data
bases for a fix for the problem. If no fix exists, contact the IBM® Support Center. Provide the
dump and the logrec data error record.

For reason code 04, no action is necessary.

Source
Master scheduler