The following is the ORA-22341 error message, you can learn the cause and solution of the Oracle database error.
ORA-22341 cannot assign supertype instance to subtype
Cause: An attempt was made to assign or copy a supertype instance to a container (destination) that can only hold a subtype instance.
Solution: Make sure the runtime type of the source of the assignment or copy is the same type as the destination or is a subtype of the destination type.
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