message: Use constants for single record
diff: @@ -397,10 +397,7 @@ export default class SiteService {
  const publicChargingStations = await ChargingStationStorage.getChargingStations(req.tenant, {
  siteIDs: [site.id],
  public: true,
  - }, {
  - skip: 0,
  - limit: 1,
  - } , ['id']);
  + }, Constants.DB_PARAMS_SINGLE_RECORD, ['id']);
  if (publicChargingStations.count > 0) {
  throw new AppError({
  source: Constants.CENTRAL_SERVER,
  