To improve performance and reduce database growth, deleting records is highly effective. The disadvantage of deleting records is that data is no longer available. Usually, however, not all records need to be saved. For example, line activities are stored by warehouse. Normally, you do not need to keep these records. Therefore, after closing a warehouse order, line activities can be removed. The User's Guide for ERP LN Archiving describes several sessions you can use to delete old data. Other data such as items and business partners can be reviewed once in a while, after which you can delete the data you no longer need. For every order and contract table a session is available to archive and delete old orders. In these sessions, you can specify several characteristics to select the orders to be removed, such as date or status. Run these sessions on a regular basis.