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ICWAIT
You have found that the task is waiting on resource type ICWAIT. This means that the task issued an EXEC CICS DELAY command that has not yet completed. Check that the interval or time specified on the request was what you intended. If you believe that the expiry time of the request has passed, that suggests a possible CICS error.
Consider, too, the possibility that the task was the subject of a long DELAY that was due to be canceled by some other task. If the second task failed before it could cancel the delay, the first would not continue until the full interval specified on DELAY had expired.