Action Usage 
You use Action Usage to generate a report listing action usage by roles, users, and profiles. You can view the last execution date of the action and number of times the action is executed in a specific time period for SAP systems.
The Action Usage report screen shows the usage for the specified action for the specified date range and for the selected system.
The report shows action usage information only for the system where the role was associated with the action.
To view an Action Usage report, enter information in the fields as needed, and then choose either Run in Foreground or Run in Background.
You can save the analysis criteria and use it again to generate reports by entering a name in the Save Variant As field, and choosing Save.