Oracle Solution for Error ora-14626

Solution for Oracle Error ORA-14626

ORA-14626: values being added already exist in DEFAULT subpartition

What triggered the Error:

An ADD VALUE operation cannot be executed because the values being added exist in the DEFAULT subpartition

What should we do to fix it:

Issue a SPLIT of the DEFAULT subpartition and then MERGE the split subpartition into the subpartition to which values need to be added