NAV Application Server (NAS)

Microsoft Dynamics NAV Application Server (NAS) is a middle-tier server component that executes business logic without a user interface or user interaction. In NAV 2013, NAS is one of the client servics that runs in the Microsoft Dynamics NAV Server.

The NAS is essentially an automated user client. Because NAS is essentially a non-UI version of the standard NAV client module, NAS can access all of NAV's business rules.

Error messages that are generated by an NAS process are logged in the Event Viewer.

NAS operates essentially the same as any other NAV Windows client. If it is set up to run the JobQueue, it processes requests in the queue one at a time, in the same manner as the GUI client. Therefore, as developers, we need to limit the number of concurrent calls to an NAS instance as the queue should remain short to allow timely communications between interfaces. In NAV 2013, multiple background sessions can be started from client sessions. This provides new opportunities...