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'Unrecognized message version.' Error

Former Member
0 Kudos

Dear colleague,

I'm using the Visual Studio 2008 Express edition to create a silver light application. When calling a web service created in net weaver platform, I got the following error:

Following are the detail error message. Can anybody tell me where goes wrong?

'Unrecognized message version'.

System.ServiceModel.CommunicationException was unhandled by user code

Message="Unrecognized message version."


at System.ServiceModel.AsyncResult.End[TAsyncResult](IAsyncResult result)

at System.ServiceModel.Channels.ServiceChannel.SendAsyncResult.End(SendAsyncResult result)

at System.ServiceModel.Channels.ServiceChannel.EndCall(String action, Object[] outs, IAsyncResult result)

at System.ServiceModel.ClientBase`1.ChannelBase`1.EndInvoke(String methodName, Object[] args, IAsyncResult result)

at TestAbapWebService.ServiceReference1.ws_ssc_usr_get_user_listClient.ws_ssc_usr_get_user_listClientChannel.EndSscUsrGetUserList(IAsyncResult result)

at TestAbapWebService.ServiceReference1.ws_ssc_usr_get_user_listClient.TestAbapWebService.ServiceReference1.ws_ssc_usr_get_user_list.EndSscUsrGetUserList(IAsyncResult result)

at TestAbapWebService.ServiceReference1.ws_ssc_usr_get_user_listClient.EndSscUsrGetUserList(IAsyncResult result)

at TestAbapWebService.ServiceReference1.ws_ssc_usr_get_user_listClient.OnEndSscUsrGetUserList(IAsyncResult result)

at System.ServiceModel.ClientBase`1.OnAsyncCallCompleted(IAsyncResult result)


Accepted Solutions (1)

Accepted Solutions (1)

Former Member
0 Kudos

Hi Anders,

directly invoking from a Silverlight control via WCF proxy a SAP BAPI webservice can be "challenging"; reason is that Silverlight only supports a subset of the WCF functionality yet, and also SAP BAPI webservice are limited in only supporting WS-Basic profile.

I succeeded in invoking from a Silverlight control SAP BAPI webservice; but in the system architecture I placed an intermediair .NET WCF webservice (*):

1. Silverlight invokes the .NET WCF webservice (this already has it's challenges, with AsyncResult, binding, [custom channel|])

2. .NET WCF webservice invokes the SAP BAPI webservice.

(*) I had some other architectural reasons in the beginning for placing the intermediair WCF webservice between client and (SAP) webserver; and later on when connecting via a Silverlight based client it proved helpful for some Silverlight peculiarities also ==> had to make some changes both in my Silverlight WCF pipeline, as on the .NET WCF webservice side.

Best regards, William.

Former Member
0 Kudos

Hi William,

Thanks very much. Now I can use Web service connect with ABAP Web Service.

Next step I'll try silverlight => ABAP Web Service.

Thanks again for your help and keep in touch.

Best regards,


Former Member
0 Kudos

How did you get it done? I still have this error message 'Unrecognized message version". Thanks!

Former Member
0 Kudos


I have the same error, using a full 3.5 WCF. My binding in the config file looks like this:

<binding name="CustomHttpTransportBinding">

<textMessageEncoding maxReadPoolSize="64" maxWritePoolSize="16" messageVersion="Soap11" writeEncoding="utf-8">

<readerQuotas maxDepth="10000000" maxStringContentLength="10000000" maxArrayLength="67108864" maxBytesPerRead="65536" maxNameTableCharCount="100000" />


<httpTransport authenticationScheme="Basic"




proxyAuthenticationScheme="Basic" realm="SAP Web Application Server [HU2]"

useDefaultWebProxy="true" />




Former Member
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Finally found out that I too was using the wsdl url instead of the actual endpoint (which can be found inside the endpoint's WSDL).

Works like a charm now.


Answers (0)