Lock an LPN A certain LPN can be locked, because it is damaged, for example. Choose Warehouse Management > LPNs in the Navigation Pane. Select the LPN. Choose the tab General > Inventory Locks. Click Lock . Choose in the drop-down menu Lock Reason, the lock reason. The lock reasons were entered via the Configurator. For example: BLOCKED - Blocked LPN Where applicable, enter in the field Lock Description an explanation on the lock. Click Finish.