RECALCFIELDS Shows Message Unknown Automation Server. Unknown Class. – Dynamics NAV 2009
Symptom
Using function ACFManagement.RECALCFIELDS shows an error message Unknown Automation Server. Unknown Class. in your Dynamics NAV 2009 system.

Cause
The function RECALCFIELDS requires the Anveo Automation to be registered.
Note: In Dynamics NAV 2009 Classic Client business code is run directly in Classic Client and not on a central server. If you run RECALCFIELDS on a client machine and not on the server, the automation must be installed on the client as well.
Solution
Register the automation as described in installation documentation.
Hint: If you need the function on each client, mark records to be recalculated instead of doing an instant recalculation. Use a NAS to do recalculations on a server every x minutes.