The waste monitors can be set to multiple options allowing the search of products depending on the restriction level and accuracy of the products being wasted, please see the below that explain where to find the setting and what each setting means.
Click into the Admin Cogs
icon and into Waste Management.Click into Waste Monitoring and Edit the monitor.
Scroll down on the Details tab to the Allowed Products setting.
Restrict By Outlet - Displays any active product in the selected outlet.
Purchased From Mini Markets - Displays any product that has been ordered via the mini markets.
Available From Mini Markets - Displays any product active in the mini markets.
User Specified - Will allow you to manage a list of a products that the site is allowed to waste via the Products tab at the top which will appear after selecting this option and clicking update.