# User Maintenance

**User Maintenance (App no. 600)** allows the user to maintain the default settings for RF queue, printer and parameter IDs.&#x20;

User RF queue can be remotely modified by the user to allow the switching of processing activities, for example moving from the inbound queue to the outbound queue, therefore changing from putaway to picking within the warehouse.

An alternate default printer, depending on the location of process, can also be changed and set remotely using the app.

Specific SAP user parameter ID’s potentially associated with processes can also be updated and maintained e.g. default plant or storage location.
