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ORA-02304:

invalid object identifier literal
Cause: An attempt was made to enter an object identifier literal for CREATE TYPE that is either:

- not a string of 32 hexadecimal characters

- an object identifier that already identifies an existing object

- an object identifier different from the original object identifier already assigned to the type


Action: Do not specify the object identifier clause or specify a 32 hexadecimal-character object identifier literal that is unique or identical to the originally assigned object identifier. Then retry the operation.