Most CICSPlex® SM API commands normally function in a synchronous manner, where your program issues a request and then waits until command processing is complete.
The CANCEL command cancels an outstanding LISTEN request. The other
commands can be used in either a synchronous or asynchronous manner. If you
specify the NOWAIT option on any of these commands, the request is processed
asynchronously.
The API commands you can use to monitor and receive the results of asynchronous
processing are:
ADDRESS
RECEIVE.
Figure 1 illustrates the relationship of
these commands to the API environment. Figure 1. API commands
for asynchronous processing