public abstract class SaleStatus
{
        public int IdSaleStatus { get; set; }
        public string Description { get; set; }

        public abstract void ChangeTo(Sale sale, SaleStatus saleStatus);
}

public class SaleStatusBooked : SaleStatus
{
        public SaleStatusBooked()
        {
            this.IdSaleStatus = 1;
            Description = "Reservado";
        }

        public override void ChangeTo(Sale sale, SaleStatus newStatus)
        {
            if (!(newStatus is SaleStatusPaid) || (!(newStatus is SaleStatusTimeOut)))
                throw new BusinessException("salestatus");

            sale.SetStatus(newStatus);
        }
}

    public class SaleStatusPaid : SaleStatus
    {
        public SaleStatusPaid()
        {
            this.IdSaleStatus = 2;
            Description = "Pago";
        }

        public override void ChangeTo(Sale sale, SaleStatus newStatus)
        {
            if (!(newStatus is SaleStatusCancelled) || (!(newStatus is SaleStatusNotResolved)) || (!(newStatus is SaleStatusCriticalError)))
                throw new BusinessException("salestatus");

            sale.SetStatus(newStatus);
        }
    }

public class SaleStatusMap: EntityTypeConfiguration<SaleStatus>
    {
        public SaleStatusMap()
        {
            ToTable("SaleStatus");
            HasKey(ss => ss.IdSaleStatus);

            Map<SaleStatusBooked>(pk => pk.Requires("IdSaleStatus").HasValue(1));
            Map<SaleStatusPaid>(pk => pk.Requires("IdSaleStatus").HasValue(2));
        }
    }

public class SaleStatusMap: EntityTypeConfiguration<SaleStatus>
{
    public SaleStatusMap()
    {
        ToTable("SaleStatus");
        HasKey(ss => ss.IdSaleStatus);

        Map<SaleStatusBooked>(pk => pk.Requires("StatusType").HasValue(1));
        Map<SaleStatusPaid>(pk => pk.Requires("StatusType").HasValue(2));
    }
}