Oracle Solution for Error exp-00098

EXP-00098: Data in table has not been upgraded, table will not be exported

What triggered the Error:

Export is attempting to process a table containing references to a type which has evolved. In order for Export to process the table successfully, all data within each table must be upgraded to the latest revision of each referenced type.

What should we do to fix it:

The table must be updated using ALTER TABLE UPGRADE DATA.