EFCore Updating an item after mapping with Automapper

public void UpsertAsync(TranslatedItem message)
{
    var result = _mapper.Map<EfItem>(message);
    if (_appDataContext.EnvItems.Any(x => x.Name == result.Name))
    {
        _appDataContext.EfItems.Update(result);
    }
    else
    {
        _appDataContext.EfItems.Add(result);
    }
    _appDataContext.SaveChanges();
}

public EfItem
{
  public int Id {get; set;}
  public string Name {get; set;}
}

public TranslatedItem : ReactiveObject
{
    private string _name;
    public string Name
    {
        get => _name;
            set => this.RaiseAndSetIfChanged(ref _name, value);
    }
}