Update Operation to SAP Failed using BDC Model

Question

Hi All,
I am working in Duet Enterprise 1.0 development in SharePoint. At SAP front Query, Read and Update operations have been developed and the corresponding WSDL and Endpoint URLs are generated.
I need to use these WSDL and Endpoint urls and perform Update operation in SharePoint. For this I need to pass the parameters POSCLKey, CorrelationID, ReleaseCode and PONumber for the update operation.
I have written the following code:
 using (new Microsoft.SharePoint.SPServiceContextScope(SPServiceContext.GetContext(site)))
BdcService service =
SPFarm.Local.Services.GetValue<BdcService>();
                        IMetadataCatalog
catalog = service.GetDatabaseBackedMetadataCatalog(SPServiceContext.Current);
//IEntity entity = catalog.GetEntity(ConfigurationManager.AppSettings["NameSpace"], ConfigurationManager.AppSettings["EntityName"]);
IEntity entity = catalog.GetEntity("http://bccplmoss:9999",
"Purchase Order V1");
foreach (KeyValuePair<string,
IMethod> methods in entity.GetMethods())
ILobSystemInstance LobSysteminstance = entity.GetLobSystem().GetLobSystemInstances()[0].Value;
IFieldCollection fieldCollection = entity.GetUpdaterView("UpdatePO").Fields;
IMethodInstance methodInstance = entity.GetMethodInstance("UpdatePO",
MethodInstanceType.Updater);
string Relcode = "V1";
//string[] parameters = { "1022_7400000011_ZPURCHASE_ORDER_HEADER_SPI_SERV_160", "7400000011", Relcode };
Identity identity = new
Identity("1022_7400000011_ZPURCHASE_ORDER_HEADER_SPI_SERV_160");
IMethodInstance methodinstance = methods.Value.GetMethodInstances()[methods.Key];
                           IEntityInstance
entityinstance = null;
entityinstance = entity.FindSpecific(identity, LobSysteminstance);
                            entityinstance.Update();
Error Details Are:
Error Occurred in the following line:
entityinstance = entity.FindSpecific(identity, LobSysteminstance);
Error Description:  The shim execution failed unexpectedly - The incoming policy could not be validated. For more information, please see the event log..
Is there any Alternate Method to update the data into SAP through BDC model? Please suggest me at the earliest.
Thanks & Regards,
Murali Krishna Tatoju
Best Regards, Murali Krishna Tatoju SAP Duet Developer

Answer 1

Hi all,
Now we are able to pass all the required input data to the update operation
and no errors exist for this operation. But when we execute the update operation, the PO is not getting updated at SAP. But same operation
is working fine from DUET-ABAP. As a test, we executed this operation from DUET ABAP front and generated the log (/iwfnd/view_log) log
has been generated. The same operation when we executed from Sharepoint and when we looked into 14-hive logs, nothing has got generated
for update operation. 
Note: when executed this update operation from SharePoint, in /iwfnd/view_log, no logs generated for updated operation.
Please suggest me a way so that I can sort out this issue.
Best Regards, Murali Krishna Tatoju SAP Duet Developer