Oracle Error ORA-40115: weights table schema is incorrect

Oracle Error Message

ORA-40115: weights table schema is incorrect

Reason for the Error

The weights table did not have the required schema.

Solution

Provide a weights table with schema: (target_value, weight), where the type of the first column corresponds to the type of the target column (CHAR, VARCHAR2 or NUMBER) and the type of the second column is NUMBER.