ORA-30737: cannot create subtable of a type which is not a subtype of the typ...

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ORA-30737: cannot create subtable of a type which is not a subtype ofthe type of
the supertable
Cause: An attempt was madeto create a subtable(subview) of a type which is not
a subtype of the type of the super object.
Action: Change the type ofthe subtable to be a subtype of the superobject's type
and then retry the operation.