We are using esri Collector on a project with esri ArcSDE. MS SQL 2008 R2 and have several point feature services that crews are collecting data on. From time to time, the field crews will call to let me know they cannot submit from Collector. They get an "unable to perform operation" error on collector. I go to the feature services and stop and start and all is well again. Would it be database side or something with the services? Would there be a script or trigger that would stop and start services overnight to ensure all keeps running? I did not build the SDE database and when I view the feature dataset, under MANAGE, I have "Unregister as versioned" active. (ghosted Register as Versioned). Don't want to lose data. There 6 to 8 2-man crews in the field creating point feature data.