IEC334I

Explanation
During Nucleus Initialization Processing (NIP)
or during VARY,ONLINE command processing, storage subsystem validation
determined that when the initialization of the addressed device on
the system occurred, it already had a device table entry initialized
for the identified subsystem. This device cannot be brought online.
In
the message text: ssid
The identifier of the subsystem being processed.
cca
The channel connection address of the device being processed.
addr
The device number of the subsystem device.

System action
Processing continues.

Operator response
Probable subsystem configuration problem.
The identified Subsystem already has a device configured with the
same Channel Connection Address (CCA) and Director-to-Device Connection
address (DDC). Use the IDCAMS Cache Utility LISTDATA command to obtain
a full device status report. The system operator may vary the device
online after the problem is repaired. DEVSERV QDASD,SSID=ssid can
be used to get the information regarding the duplicate subsystems.

Source
DFSMSdfp