GetOpenPurchaseOrdersRQ GetOpenOrdersRequest = new GetOpenPurchaseOrdersRQ();

 GetOpenPurchaseOrdersRS GetOpenOrdersResponse = new GetOpenPurchaseOrdersRS();
 GetOpenOrdersResponse.PurchaseOrders = new List<PurchaseOrder>();
 GetOpenOrdersResponse.Response = new Response();

 SupplierServiceClient service = new SupplierServiceClient();
 service.Endpoint.Binding.CloseTimeout = TimeSpan.FromSeconds(int.Parse(ConfigurationManager.AppSettings["CommandTimeOut"]));
 service.Endpoint.Binding.ReceiveTimeout = TimeSpan.FromSeconds(int.Parse(ConfigurationManager.AppSettings["CommandTimeOut"]));
 service.Endpoint.Binding.OpenTimeout = TimeSpan.FromSeconds(int.Parse(ConfigurationManager.AppSettings["CommandTimeOut"]));
 service.Endpoint.Binding.SendTimeout = TimeSpan.FromSeconds(int.Parse(ConfigurationManager.AppSettings["CommandTimeOut"]));
 service.ClientCredentials.UserName.UserName = ConfigurationManager.AppSettings["username"];
 service.ClientCredentials.UserName.Password = ConfigurationManager.AppSettings["password"];

 service.GetOpenPurchaseOrders(GetOpenOrdersRequest);