Oracle Error ORA-22979: cannot INSERT object view REF or user-defined REF

Oracle Error Message

ORA-22979: cannot INSERT object view REF or user-defined REF

Reason for the Error

Attempt to insert an object view REF or user-defined REF in a REF column created to store system generated REF values”

Solution

Make sure the REF to be inserted is not from an object view or from a user-defined REF column