How to batch update Purchasable Flag for items using FBDI

Summary:
In the Product Management Modules, we wanted to update a item's purchasable flag in all the IOs.

I found the FBDI template below can be used to batch update items "Purchasable" flag: https://docs.oracle.com/en/cloud/saas/supply-chain-and-manufacturing/25d/oefsc/item-3000.html

Please advise how we can fill the template to update ONLY the Purchasable flag, but not impacting other unnecessary fields. 

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