The inventory exceptions list can be found by navigating to
Inventory > Exceptions. This list represents anytime an event was unable to pull inventory and requires a backfill. For example, a POS order or a Delivery that did not have inventory to fill the line item(s).
The line item will display a back order
icon and the product will show a backfill on the product listing.
Each line is linked to the product or event that created the exception to help investigate the issue.
A count can be created from the exception list by clicking on the count button at the top left. 
The toggle button

at the top right will toggle between event/product and grouping the products.
As with all grids, the list can be sorted and filtered in the column header.
Note: inventory exceptions may effect replenishment