This article describes how to manually initialize Custom Properties configured on Orion servers. Issue with adding Custom Properties from Orion server(s) may manifests itself in
EOC.PollingService.log throwing below error:
2017-03-08 07:46:40,374  7 Orion.Module.Core WARN SolarWinds.EOC.BusinessLayer.DAL.CustomPropertyDAL - Exception when adding custom property AlertConfigurationsCustomProperties.ResponsibleTeam for SolarWinds Server 7:
System.ArgumentException: Requested value 'AlertConfigurationsCustomProperties' was not found.