I am getting 0S00I SUB ECTSTASK CANCELED during the daily shutdown of CICS TS

Document ID : KB000025846
Last Modified Date : 14/02/2018
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Problem:

Getting 0S00I SUB ECTSTASK CANCELED during the daily shutdown of CICS TS 

Cause:

This error will occur if CEMT P SHUT,I (shutdown immediate) was issued to shut down CICS.

With Immediate Shutdown - Explore's main task has shut down but Explore's subtasks are coming down without being posted by the main task.

Workaround:

When CEMT P SHUT,I can not be avoided to shut down CICS,  issue the transaction EXPT to shut down Explore for CICS first.