smartField for key property
I have following issue: I need to create smartForm for entity creation, my entity has some keys (not GUID). As far as I know it's not possible to set sap:updatable=true for key proprties and sap:creatable doesn't impact on editable mode of field. Also I can't set editable=true for such field on UI (in any case it's not editable). How can I deal with it, any solution?