Oracle Message ORA-14640 - add/coalesce index partition operation is valid only for hash partitioned global indexes

ERRORadd/coalesce index partition operation is valid only for hash partitioned global indexes
CAUSEUser attempted to add or coalesce an index partition of a global index not partitioned by hash method.
ACTIONIssue the statement on a global index partitioned by hash method. or if the index is partitioned by range method consider using split/drop instead of add/coalesce.