DFS1728E START MADSIOT COMMAND FAILED. RSN=rr

Explanation

The /START MADSIOT command failed because one IMS was unable to participate in the MADS I/O timing structure. The reason code rr indicates the reason for failure:
Reason code
Meaning
01
This IMS connected to the structure, but another IMS failed to connect to the structure.
02
This IMS cannot connect to the structure.

System action

MADS I/O timing is still disabled.

Programmer response

Correct the problem and reissue the /START MADSIOT command from an IMS (not the one that originated the message) to restart MADS I/O timing. If the problem cannot be corrected, stop the IMS that generated the error and reissue the /START MADSIOT command.