foreach (var dDto in despatcherDto)
            {

                if (!IsValid(dDto))
                {
                    sb.AppendLine(ErrorMessage);
                    continue;
                }

                if (dDto.Position.IsNullOrEmpty())
                {
                    sb.AppendLine(ErrorMessage);
                    continue;
                }

                var trucks = new List<Truck>();


                foreach (var tDto in dDto.Trucks)
                {
                    if (!IsValid(tDto))
                    {
                        sb.AppendLine(ErrorMessage);
                        continue;
                    }


                    trucks.Add(new Truck()
                    {
                        RegistrationNumber = tDto.RegistrationNumber,
                        VinNumber = tDto.VinNumber,
                        TankCapacity = tDto.TankCapacity,
                        CargoCapacity = tDto.CargoCapacity,
                        CategoryType = (CategoryType)tDto.CategoryType,
                        MakeType = (MakeType)tDto.CategoryType
                    });


                }

                Despatcher despatcher = new Despatcher()
                {
                    Name = dDto.Name,
                    Position = dDto.Position,
                    Trucks = trucks
                };

                valiDespatchers.Add(despatcher);

                sb.AppendLine(string.Format(SuccessfullyImportedDespatcher, despatcher.Name, trucks.Count()));