IBM TOTAL STORAGE DS8000 - Manual (Page 177)

CMUN02027E SOURCE Unable to modify logical subsystem: cannot set
session timeout
Explanation
The specified session timeout value is negative. Only positive values are valid.
Action
Specify a valid timeout value, and then resubmit the task. If the problem persists,
contact IBM technical support for assistance.
CMUN02028E SOURCE Cannot use array sites. These sites are flagged
to be serviced.
Explanation
The array sites are flagged for service. An array cannot be created using these
sites.
Action
Wait until service is completed on the array sites, and then resubmit the task.
CMUN02029E SOURCE Internal error
Explanation
The storage management console server reports a storage unit microcode-level
error.
Action
Contact IBM technical support for assistance.
CMUN02030E SOURCE Unable to repair array
Explanation
The storage management console server reports a storage unit microcode-level
error.
Action
Contact IBM technical support for assistance.
CMUN02031E SOURCE Operation failure: changes are pending
Explanation
The storage management console server reports a storage unit microcode-level
error. The operation cannot be completed because previously stipulated changes
have not yet been applied.
Chapter 7. DS storage management console server messages 157