Delete Inventory Option/Upgrade in Project Admin Center
3 - Click on the Inventory Options tab.
4 - Click on the Option you want to delete.
5 - Click on Delete Option.
6 - You will be asked if you are sure you want to delete the selected item(s). Click Yes.
Note: You can delete more than one Option at the same time by holding down your Ctrl key and selecting multiple Options.
Warning: Deleting an Option will permanently remove all references to it from the Inventory Details and related reports.