This report lists those assets which have not been located in a stocktake since a given date. You can choose what assets to display by setting the report filter to only show assets with a Last Stocktake Date prior to the start of a stocktake.
Run the Assets Module.
Choose Stocktake>Stocktake Reconciliation from the Reports menu option.
Select the parameters for the report (if any). Click the OK button on the report parameter window to run the report.