401

Explanation
During processing of a WAIT macro, the system found
an error in the caller's environment.
Register 15 contains a
hexadecimal reason code that explains the error: Code
Explanation
04
The caller does not hold the home address space's local lock.
08
The caller does not have addressability to the home address space.
0C
A disabled caller issued a WAIT macro with the LINKAGE=SYSTEM
option.
10
A caller who held a lock issued a WAIT macro with the LINKAGE=SYSTEM
option.
14
A caller who was not processing in task mode issued a WAIT macro
with the LINKAGE=SYSTEM option.
18
A caller who was not processing in primary address space control
(ASC) mode issued a WAIT macro with the LINKAGE=SYSTEM option.

System action
The system abnormally ends the program that issued
the WAIT macro.

System programmer response
  If the error recurs and the program
is not in error, look at the messages in the job log for more information.
Search problem reporting data bases for a fix for the problem. If
no fix exists, contact the IBM® Support
Center. Provide the program listing for the job.

Programmer response
This is probably an error in the calling
program. Modify the code to allow the WAIT macro to be issued in the
correct environment.  Run the program again.

Source
Task management