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Add Business Partner via Service Layer

Mar 28 at 09:12 AM


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Former Member

Hello everybody,

I try to add a new Business Partner on SAP HANA back end via Service Layer

I have tried using both .Net HttpClient and HttpWebRequest

Using HttpCliend I get an exception with Stack Trace

An error occurred while sending the request.
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1.ConfiguredTaskAwaiter.GetResult()
   at System.Net.Http.HttpClient.<FinishSendAsyncBuffered>d__58.MoveNext()

Using HttpWebRequest I manage to connect to Service Layer but on adding new Business Partner I get a connection error

---------------------- Connection Response ----------------------
   "odata.metadata" : "$metadata#B1Sessions/@Element",
   "SessionId" : "fbca8422-3730-11e8-8000-08002740a590",
   "Version" : "920180",
   "SessionTimeout" : 30

---------------------- Add Business Partner ----------------------
The remote server returned an error: (401) Unauthorized.

Can someone please explain why I get the above results?

Best regards,

Dimitris Theotokatos

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4 Answers

Best Answer
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Former Member Apr 19 at 09:17 AM

Hello Ralph,

thank you for your response.

I manage to solve my problem using RestSharp and

var _client = new RestClient(Url);
var _request = new RestRequest(Method);

_request.AddCookie("B1SESSION", "VeryLongSessionID");
_request.AddCookie("ROUTEID", "HeaderRouteID"]);
_request.AddHeader("Content-type", "application/json");
_request.AddParameter("undefined", myJsonObject, ParameterType.RequestBody);
IRestResponse _response = _client.Execute(_request);

Just leaving it here in case some else faces the same problem as I did.

Best regards,

Dimitris Theotokatos

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Miklós Németh Mar 28 at 02:17 PM

Hi, You should pass along the B1SESSION cookie something like this

B1SESSION dfe00e3e-31d2-11e8-8000-000c297176d4

in all subsequent HTTP request headers. I hope this helps. Miklos

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Former Member

Hello Miklos,

thank you for your reply.

Can you please provide an example on what exactly must be the header of my request?

Thank you,

Dimitris Theotokatos

Ralph Oliveira
Apr 16 at 11:47 AM


I did not check your code but there is a complete example of how to use Service Layer with WCF and I've done another simple code that make a couple of SL requests using pure .Net (check lib/ServiceLayer)

Anyway, This is more a .Net coding issue than a B1 specific.

So, better suit for StackOverflow of (how to set a cookie with .net requests) than here.


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Former Member Mar 30 at 06:58 AM

So I followed Miklos's advice and sent to Service Layer the following requests:

1) I added B1SESSION=194903fc-3966-11e8-8000-08002740a590; ROUTEID=.node1 to my request as a Header with Name "Cookie"

here is a sample of my request

httpWebRequest.Headers.Add("Cookie", "B1SESSION=194903fc-3966-11e8-8000-08002740a590; ROUTEID=.node1");

The responce I got was

The remote server returned an error: (400) Bad Request.

2) I added B1SESSION=194903fc-3966-11e8-8000-08002740a590; ROUTEID=.node1 as a Cookie using:

if (httpWebRequest.CookieContainer == null)
     httpWebRequest.CookieContainer = new CookieContainer();
Uri _target = new Uri(Url);

httpWebRequest.CookieContainer.Add(new Cookie("B1SESSION", "194903fc-3966-11e8-8000-08002740a590") { Domain = _target.Host });
httpWebRequest.CookieContainer.Add(new Cookie("ROUTEID", ".node1") { Domain = _target.Host });

The response I got was

The remote server returned an error: (400) Bad Request.

Please note that I set my request as

var httpWebRequest = (HttpWebRequest)WebRequest.Create(Url);
httpWebRequest.ContentType = "application/json";
httpWebRequest.Method = "POST";
httpWebRequest.ServerCertificateValidationCallback += (sender, certificate, chain, sslPolicyErrors) => true;

using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))
var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();

Where Url is Service Layer location and entity I need to call and _json is the json object I need to send

Can anyone please advice how to make a request to service layer with log in session?

Kind regards,

Dimitris Theotokatos

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