下面是创建this Relation所需的关系
下面是每个表的实体类
机场表格：

[Table("Airport")]
public class Airport
{
    [Key]
    public Guid Id { get; set; }
    [Required]
    [MaxLength(50)]
    public string Name { get; set; }
    [Required]
    [MaxLength(50)]
    public string City { get; set; }
    [Required]
    [MaxLength(50)]
    public string Country { get; set; }
    public ICollection<FlightSchedule> DepartureAirports { get; set; }
    public ICollection<FlightSchedule> ArrivalAirports { get; set; }
    public Airport()
    {
        DepartureAirports = new List<FlightSchedule>();
        ArrivalAirports = new List<FlightSchedule>();
    }
}

航班时刻表：

[Table("FlightSchedule")]
public class FlightSchedule
{
    [Key]
    public Guid Id { get; set; }
    [Required]
    public Guid DepartureAirportId { get; set; }
    public Airport AirportDepart { get; set; }
    [Required]
    public Guid ArrivalAirportId { get; set; }
    public Airport AirportArrival { get; set; }
    [Required]
    public DateTime DepartureTime { get; set; }
    [Required]
    public DateTime ArrivalTime { get; set; }
    public ICollection<Flight> Flights { get; set; }
    public FlightSchedule()
    {
        Flights = new List<Flight>();
    }
}

下面是我在OnModelCreating（）方法中对DbContext的配置：

protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        base.OnModelCreating(modelBuilder);
        modelBuilder.Entity<Airport>(entity =>
        {
            entity.Property(e => e.Id).ValueGeneratedOnAdd();
        });

        modelBuilder.Entity<FlightSchedule>(entity =>
        {
            entity.Property(e => e.Id).ValueGeneratedOnAdd();

            entity.HasOne(e => e.AirportDepart)
            .WithMany(e => e.DepartureAirports)
            .HasForeignKey(e => e.DepartureAirportId)
            .OnDelete(DeleteBehavior.ClientSetNull);

            entity.HasOne(e => e.AirportArrival)
                .WithMany(e => e.ArrivalAirports)
                .HasForeignKey(e => e.ArrivalAirportId)
              .OnDelete(DeleteBehavior.ClientSetNull);
        });

从SQL服务器构建的图表看起来像我设计的，但是当我为这两个表添加一些数据种子时，只有Airport工作，Flight Schedule将产生此错误
未按约定配置从“Airport”到“FlightSchedule”的关系，因为一个实体类型（{“ArrivalAirports”，“DepartureAirports”}）上有多个属性可以与其他实体类型（{“AirportArrival”，“AirportDeparts”}）上的属性匹配。如果已在“OnModelCreating”中指定显式配置，则可以忽略此消息。
我怀疑我的配置可能是错误的，但我不确定原因是什么，因为这是我第一次尝试先使用代码。