IDC31616I   REINITIALIZE FAILED device IS NOT OFFLINE

Explanation

A SETCACHE REINITIALIZE request requires that all devices attached to the subsystem be offline. This message is issued for the first volume found to be not offline.

In the message text:
device
The device identifier (unit number) for one of the devices attached to the subsystem.

System action

Processing continues.

Programmer response

Resubmit the command after all volumes have been varied offline.

Source

DFSMSdfp