public DeliveryOrder VHasNoSalesInvoice(DeliveryOrder deliveryOrder, ISalesInvoiceService _salesInvoiceService)
{
IList <SalesInvoice> salesInvoices = _salesInvoiceService.GetObjectsByDeliveryOrderId(deliveryOrder.Id);
if (salesInvoices.Any())
{
deliveryOrder.Errors.Add("Generic", "Sudah memiliki sales invoice");
}
return(deliveryOrder);
}