core/modules/psocsf/public/Ocsf/SeverityId.cs

namespace Ocsf {
    public enum SeverityId : int
    {
        Unknown = 0,
        Informational = 1,
        Low = 2,
        Medium = 3,
        High = 4,
        Critical = 5,
        Fatal = 6,
        Other = 99
    };
}