IBM TOTAL STORAGE DS8000 - Manual (Page 145)

CMUS00025E The relationship properties cannot be displayed. The
relationship no longer exists.
Explanation
The specified relationship has been removed by another user, or it was removed
automatically when a background copy completed.
Action
Close the properties page. The relationship will disappear from the main panel.
Select a different relationship, and then resubmit the task.
CMUS00026E Relationships VALUE_0 specify volumes with incompatible
sizes. These relationships will not be created.
Explanation
The specified relationships will not be created because the volume sizes are not
compatible. For example, the target volume might be smaller than the source
volume.
Action
Return to the previous panel to select compatible volumes, click the Cancel button
to cancel the operation, or click the Finish button to create the remaining
relationships.
CMUS00027W The paths you are attempting to remove are used by
existing Remote Mirror and Copy pairs. All paths cannot be removed
from target LSSs VALUE_0 while pairs exist. The Remote Mirror and
Copy pairs must be removed before all paths can be removed.
Explanation
You must remove any Remote Mirror and Copy pairs that use the only remaining
path before you can remove the path.
Action
Remove any Remote Mirror and Copy pairs that use the paths, and then resubmit
the task.
CMUS00028E You must select at least one FlashCopy relationship.
Explanation
You must select a relationship before you can initiate a background copy or commit
or discard changes. No relationship is selected.
Action
Select a FlashCopy relationship, and then resubmit the task.
Chapter 4. DS Storage Manager Copy Services messages 125