IDC3612I DELETE UNSUCCESSFUL - NOT A CLUSTER OR AIX

Explanation
An attempt was made to delete the duplicate entry
because catalog define of the cluster or alternate index being imported
failed due to the existence of a duplicate name in the catalog. A
locate performed on the name revealed that the entry was not a cluster
or alternate index.

System action
The command is ended.

System programmer response
  If the error recurs and the program
is not in error, search problem reporting data bases for a fix for
the problem. If no fix exists, contact the IBM® Support Center. Provide the JCL and the SYSOUT
output for the job.

Programmer response
Use the NEWNAME parameter to change the
name of the cluster or alternate index you are attempting to import.
Do a LISTCAT to see what you really have; what you are trying to import
has a conflicting name in the catalog.

Source
DFSMSdfp

Module
IDCMP01