Last week while trying to generate from Visual Studio 2013 a schema of a custom SAP IDOC by:
- Right-click your BizTalk Server project, and then choose “Add | Add Generated Items | Consume Adapter Service”.
- In the “Consume Adapter Service” Add-in screen, select the sap adapter binding.
- You should set the connection URI to SAP server and after that click “Connect”
- From the “Select contract type” drop-down list, select “Service (Inbound operations)” option
- In the “Select a category” box, expand the IDOC node and select the IDOC that you want to retrieve, to see the IDOC message types in the “Available categories and operations” box.
- From the “Available categories and operations”, add the “Receive” operation to the "Added categories and operations" by selecting the operation and click the “Add” button
- And finally click “Ok” to generate the IDOC SAP schema
I got the following error:
“Error while retrieving or generating the WSDL. Adapter message: Details: ErrorCode=RFC_EXCEPTION. ErrorGroup=RFC_ERROR_APPLICATION_EXCEPTION. SapErrorMessage=SEGMENT_UNKNOWN. AdapterErrorMessage=Error returned by RfcCallReceiveEx while calling RFC: IDOCTYPE_READ_COMPLETE..
Microsoft.Adapters.SAP.RFCException: Details: ErrorCode=RFC_EXCEPTION. ErrorGroup=RFC_ERROR_APPLICATION_EXCEPTION. SapErrorMessage=SEGMENT_UNKNOWN. AdapterErrorMessage=Error returned by RfcCallReceiveEx while calling RFC: IDOCTYPE_READ_COMPLETE..”
Server stack trace:
at Microsoft.Adapters.SAP.RFCException.HelperThrow(Int32 retCode, String additionalErrorMessage)
at Microsoft.Adapters.SAP.RfcOutboundInvoker.Invoke()
at Microsoft.Adapters.SAP.InternalIdocMetadata..ctor(String idocType, String cimType, String release, String version, MetadataLookup metadataLookup, SAPConnection sapConnection, TimeoutHelper timeoutHelper)
at Microsoft.Adapters.SAP.SAPMetadataContract.ResolveTypeMetadata(String typeId, TimeSpan timeout, TypeMetadataCollection& extraTypeMetadataResolved)
at Microsoft.ServiceModel.Channels.Common.Design.MetadataCache.GetTypeMetadata(String uniqueId, Guid clientId, TimeSpan timeout)
at Microsoft.ServiceModel.Channels.Common.MetadataLookup.GetTypeDefinition(String typeId, TimeSpan timeout)
at Microsoft.Adapters.SAP.SapIdocMetadata..ctor(String absName, String idocType, String cimType, String release, String version, SAPConnection sapConnection, Boolean generateFlatFileCompatibleIdocSchema, Boolean segmentTypeInFlatFileAnnotation, MetadataLookup metadataLookup, TimeoutHelper timeoutHelper)
at Microsoft.Adapters.SAP.SAPMetadataContract.ResolveTypeMetadata(String typeId, TimeSpan timeout, TypeMetadataCollection& extraTypeMetadataResolved)
at Microsoft.ServiceModel.Channels.Common.Design.MetadataCache.GetTypeMetadata(String uniqueId, Guid clientId, TimeSpan timeout)
at Microsoft.ServiceModel.Channels.Common.MetadataLookup.GetTypeDefinition(String typeId, TimeSpan timeout)
at Microsoft.Adapters.SAP.IdocOperationMetadata.ExportXmlSchema(XmlSchemaExportContext schemaExportContext, MetadataLookup metadataLookup, TimeSpan timespan, OperationParameterDirection direction)
at Microsoft.Adapters.SAP.IdocOperationMetadata.ExportInputXmlSchema(XmlSchemaExportContext schemaExportContext, MetadataLookup metadataLookup, TimeSpan timespan)
at Microsoft.ServiceModel.Channels.Common.Design.WsdlBuilderHelper.AddOperationSchema(OperationMetadata operationMetadata, TimeSpan timeout)
at Microsoft.ServiceModel.Channels.Common.Design.WsdlBuilder.SearchBrowseNodes(MetadataRetrievalNode[] nodes, WsdlBuilderHelper helper, TimeoutHelper timeoutHelper)
at Microsoft.ServiceModel.Channels.Common.Design.WsdlBuilder.GenerateOperationSchemas(WsdlBuilderHelper helper, MetadataRetrievalNode[] nodes, TimeSpan timeout)
at Microsoft.ServiceModel.Channels.Common.Design.WsdlBuilder.GetWsdl(MetadataRetrievalNode[] nodes, Uri uri, TimeSpan timeout)
at Microsoft.Adapters.SAP.SapCustomWsdlRetrieval.GetWsdl(MetadataRetrievalNode[] nodes, Uri uri, TimeSpan timeout)
at Microsoft.ServiceModel.Channels.Common.Design.MetadataExchanger.ProcessMetadataGet(Message message, Uri target, TimeSpan timeout, MetadataLookup metadataLookup)
at Microsoft.ServiceModel.Channels.Common.Design.MetadataExchanger.ProcessMetadataMessage(Message message, Uri target, TimeSpan timeout, MetadataLookup metadataLookup, Message& replyMessage)
at Microsoft.ServiceModel.Channels.Common.Channels.AdapterRequestChannel.Request(Message message, TimeSpan timeout)
at System.ServiceModel.Dispatcher.RequestChannelBinder.Request(Message message, TimeSpan timeout)
at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout)
at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation)
at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message)
Exception rethrown at [0]:
at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
at Microsoft.ServiceModel.Channels.IMetadataRetrievalContract.GetMetadata(MetadataRetrievalNode[] nodes)
at Microsoft.ServiceModel.Channels.Tools.MetadataSearchBrowse.MetadataPanel.GetWsdl(MetadataRetrievalNode[] nodes)
at Microsoft.ServiceModel.Channels.Tools.MetadataSearchBrowse.MetadataUserControl.GetWsdl()
CAUSE
The SAP adapter uses the IDOCTYPE_READ_COMPLETE RFC to retrieve the metadata for the Receive operation for an IDOC. Invoking this RFC requires specific user permissions in the SAP system. To generate metadata, if you have connected to the SAP system using a credential that does not have permission to invoke the IDOCTYPE_READ_COMPLETE RFC, the SAP adapter gives an error.
So in order to demystify problems you should:
- Make sure that your connection URI are well set
- And you should try to import a schema from a standard IDOC, like INVOIC01, STATUS or ORDER01
If you are unable to import the schemas then you have a different problem from what I’m addressing here and you probably need to contact your SAP team to try to diagnose the problem, it probably may be lack of permissions. But normally in this cases you will receive a:
- SapErrorMessage= OBJECT_UNKNOWN.
In my case I was able to import all the standard IDOC from SAP, however as I stated before I was trying to import the schema from a custom SAP IDOC created by my customer and I got instead a:
- SapErrorMessage=SEGMENT_UNKNOWN
Which means, that while importing the IDOCTYPE_READ_COMPLETE RFC was not properly identifying some segments of the IDOC.
After validating with my SAP team we realize that some segments were not in the state “released” in SAP, this may not be the correct SAP interface logic but just to give you an idea here are some SAP print screens:
Note: that all custom segments used in the IDOC must be released in SAP before you can import and use them in BizTalk Server.
SOLUTION
Well the only solution is to contact you SAP team and they must be sure that all segments of the IDOC that you are trying to import are released correctly.
Unfortunately we don’t have the segment information in question, but more likely it is some custom segment that they created.
