Oracle Error ORA-22887: type of REF column is not the same as that of its scoped table

Oracle Error Message

ORA-22887: type of REF column is not the same as that of its scoped table

Reason for the Error

The type specified for the REF column and the type specified for the scope table are different.

Solution

Ensure that the types of a REF column and its scoped table are the same.