478

Explanation
An error occurred when the system tried to process
an RC or RU form of the FREEMAIN macro or the STORAGE RELEASE macro.
A reason code in the SDWACRC field of the system diagnostic work area
(SDWA) explains the error: Code
Explanation
04
The caller tried to FREEMAIN or STORAGE RELEASE a subpool that
cannot be freed. Only subpools defined as eligible for subpool
FREEMAIN or STORAGE RELEASE may be freed as an entire subpool.  All
other subpool storage areas must be freed by individual requests explicitly
describing the area.

08
A problem program tried to free subpool zero.  The control program
releases subpool zero when a job step ends.

System action
The system issues message IEA705I. The system
abnormally ends the current task.

Programmer response
If you intended the FREEMAIN or STORAGE
RELEASE macro to release subpool zero, remove it from the program.
If you did not intend the FREEMAIN or STORAGE RELEASE macro to release
subpool zero, check for program errors that incorrectly modify the
FREEMAIN or STORAGE RELEASE macro expansion. After making corrections,
run the job step again.

Source
Virtual storage manager (VSM)