Here is the code I have currently: @Query private var locations: [Location] ForEach(locations) { location in LocationListRowView(location: location) } .onDelete(perform: { indexSet in for index in indexSet { context.delete(locations[index]) } }) .onMove(perform: move) func move(from source: IndexSet, to destination: Int) { locations.move(fromOffsets: source, toOffset: destination) } The error comes up on the line in the move function.