Oracle Solution for Error ora-25106

ORA-25106: only one of PARALLEL or NOPARALLEL clause may be specified

What triggered the Error:

RALLEL was specified more than once, NOPARALLEL was specified more than once, or both PARALLEL and NOPARALLEL were specified in an ALTER INDEX REBUILD statement.

What should we do to fix it:

move all but one of the PARALLEL or NOPARALLEL clauses.