The service being published requires its data to be copied to the server-side egdb. This is the case when publishing feature services or transaction-enabled WFS (WFS-T) services. The server-side publishing tool was unable to connect to this database.
This server system tool is invoked by the publishing client (Manager or ArcGIS Desktop) when you create a service.
Verify that the server has a server-only enterprise geodatabase correctly configured. If the service type you want to publish requires an enterprise geodatabase, you must first create an enterprise geodatabase on the server and register it as an ArcGIS Server Managed Database.