FPOS automatically purges old data in order to maintain itself and create room for newer data. The Purge Old Data operation will remove data based on thresholds defined in System Settings. See Data Retention for more information. The Purge Old Data utility is placed in the Windows startup when FPOS setup is run and can be scheduled to run at a specified time.
You can also perform a one time purge of data from the Purge Old Data utility in the Back Office. See Purge Old Data (from the Back Office) for more information.