I'm using the Smart Editor and want to know if it's possible to limit the editable features to a subset of all features available. for instance, I have a status field with multiple values: open, closed, archived. The feature should be editable until status is set to archived. At that point it should be read-only. Any idea if this is possible?
The functionality you're asking for is not possible. It might be possible with some custom development, but not with out-of-the-box functionality. Security on feature services depends on how you've configured security on both your GIS Server and ArcGIS Online organization/Portal for ArcGIS (if applicable). This help topic is a good place to start,
Hope this helps,
are your features hosted on AGO? You could try creating a feature layer view, changing it's visualization to only show open and closed features, and making that feature layer view editable.