When you go to the "objects" tab, and you can click on the right lower corner "red" dot to remove unused objects as shown in the screenshot. After removing unused objects, you will need to click on the "Green" dot again to re-calculate unused objects so it will reflect the change.
Please aware of the pre-defined service objects like application-default, http, https , those can't be removed due to it's pre-defined service objects in PAN-OS.
Hello @shallugarg ,
For duplicate objects, you can go to Dashboard and click on the red number shown on the duplicate objects and it will take you to see the duplicate objects, example, if it's address objects, you can right-click on the address objects and click on "merge" to merge either based on name and value or value.
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