The Copies Not Inventoried report generates a list of copies that have not been inventoried on or after the specified date. The report shows the last inventory date for each copy. Performing an inventory or checking in (or out) renews this date.
Note that the default Starting Date is set for one month prior to the current date. And if the Use Funding Source instead of Copy Location checkbox is checked, the last column in the report will show each copy's funding source rather than the copy location.