An IOACTION STOP command was entered for one or more devices for which the STOP command is not allowed. The STOP is not allowed because the device contains a system critical resource as specified in the message text.
The system ignores the listed devices.
Verify that correct device numbers were entered. If device numbers were correct and this command was issued in response to an IOS427A message, then proceed with the alternate recovery techniques listed in that message.
Input/output supervisor (IOS)
IOSVQRDV
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