Oracle Solution for Error ora-14203

Solution for Oracle Error ORA-14203

ORA-14203: subpartition bound of subpartition "string" is too long

What triggered the Error:

Length of linear key representation of a high bound of the specified subpartition displayed in this message exceeded the legal limit (4K).

What should we do to fix it:

Change the representation of a subpartition high bound to bring its length within legal limit.