In the Object Types main window, select the object type you want to delete in the navigation pane or the content pane.
Click the Delete button: 
. This displays a dialog box asking you if you are sure you want to delete the object type.
Click Yes.
Follow this procedure when you want to delete an object type that you created in error or is no longer required.
PRIVILEGES Manage Object Types
NOTE You cannot delete the baseline type BASELINE.
Object types (item types, request types, baseline types, design part categories, and project types) cannot be deleted if there are any instances of that type existing within the product. For request types, this constraint applies to requests located in both the main and secondary catalogs.
An item type or request type cannot be deleted if its Change Management rules are still enabled.
To delete an object type:
In the Object Types main window, select the object type you want to delete in the navigation pane or the content pane.
Click the Delete button: . This displays a dialog box asking you if you are sure you want to delete the object type.
Click Yes.
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