ORA-14263: new subpartition name must differ from that of any other subpartition of the object
Cause: User entered ALTER TABLE/INDEX RENAME SUBPARTITION specifying <new-subpartition-name> which is identical to the name of some existing subpartition of the object
Action: Ensure that the new subpartition name is different from the name of any (including the one being renamed) existing subpartition of a given table or index