Oracle Solution for Error ora-23371

ORA-23371: column string unknown in table string

What triggered the Error:

me column in "array_columns" argument (or "column_list" argument) to "differences()" routine does not correspond to a column in the specified table.

What should we do to fix it:

ke sure that all the columns in either "array_columns" or "column_list" are present in the specified table.