ORA-02303: cannot drop or replace a type with type or table dependents

Try to modify a type and CREATE OR REPLACE TYPE gives the error:

ORA-02303: cannot drop or replace a type with type or table dependents

If you need to modify a type you need to drop all the dependent (child) objects first or use FORCE option (Not recommended)

Dependent objects may be found using:

BEGIN
 DBMS_UTILITY.get_dependency (  type => 'TYPE',
                                                         schema => 'APPS',
                                                            name => 'COST_OBJ_TYPE1');
END;