This macro may not be used prior to the completion of WLM address
space initialization
The caller must have issued the IWM4MCRE macro successfully and
the created delay monitoring environment must be enabled for EWLM
support. This means the delay monitoring environment must be created
by one of the following ways:
IWM4CONN EWLM=YES ... and IWM4MCRE SUBSYSP=CONNECT ... OR
IWM4MCRE SUBSYSP=VALUE EWLM=YES ...
The caller is responsible for error recovery.
The current PSW key must be 0 or match the key specified on IWM4MCRE
provided the latter is a system key (0-7).
The caller must serialize to prevent any delay monitoring services
from being invoked concurrently for the environment represented by
the monitoring token.
This macro may only be used on z/OS V2R1 or higher.