message: Do not add custom OCPP param if already exists in OCPP (Delta)
diff: @@ -1550,7 +1550,12 @@ export default class OCPPUtils {
  // Add the existing custom params
  const customParams = ocppParametersFromDB.result.filter((customParam) => customParam.custom);
  if (!Utils.isEmptyArray(customParams)) {
  - chargingStationOcppParameters.configuration = chargingStationOcppParameters.configuration.concat(customParams);
  + for (const customParam of customParams) {
  + const foundCustomParam = chargingStationOcppParameters.configuration.find((configuration) => configuration.key === customParam.key);
  + if (!foundCustomParam) {
  + chargingStationOcppParameters.configuration.push(customParam);
  + }
  + }
  }
  // Save config
  await ChargingStationStorage.saveOcppParameters(tenantID, chargingStationOcppParameters);
  