Hi,

In one of the applications on the portal (which is on NW 7.3), we are using Trex and when we try to search for anything, it gives the following exception:

com.sapportals.trex.TrexException: attribute value is not a number;index=dealerinventorytrader_index,location=epdidc02:30203 (Errorcode 6930)

I am not familiar with KM and Trex and am trying to find out what is causing the issue. I have checked the status of the index in the system administration and it shows green. Also, in the queue status, it shows idle for this index.

Thanks & Regards,

Vaishnavi

Hi all,

I want to develop KM programs in my NWDS 7.3 by using KMC plug-in that is mentioned in the note 1572813.

But the download link for KMC plug-in in this note is broken.

If anyone of you have this plug-in, could you please send me a copy?

Thanks for help.

Regards,

Nick

Does anyone know where KM files are stored on the Portal Server?  And are they saved with the name I give them in KM in the portal, or does the system give them a new name?

I am trying to write a batch file that copies some KM files every day and moves them to a different location on the server, but I can't find where on the server the KM files are stored.

Any help would be appreciated.

Thanks,

Owen

Hi!!

After uploading a pdf document on our portal, we many times get an error, file does not begin with '%Pdf-'  whenever, one tries to open it. Could you please suggest some remedy for it.

Hi experts,

after upgrading our E-Recruiting to 7.4, we are faced with a strange behavior of our NetWeaver Portal (7.02):

When you open a WD4A-Application via Portal, the application is started correctly. But if you open the application again (second time), you receive an error-page, which says "400 Session timed out - please log in again".

BUT, it just keeps getting better!!! When you navigate again to the application (third time), everything works fine. Fourth time, you get the error page again (and so on...)

So, what the hell is going on here?!? HTTP-Trace shows nothing special....

Regards

Michael

hi

we created page and area...

but publish button is not enable all time in page or area

how to enable publish button

Hi, I have several .mht documents in my public documents folder that I want to using KM Document IView's.  When I try to access one of the documents with the IView I get a generic file download dialog.  The dialog shows the whole filename without the extension and the type listed is unknown.  I don't know why it would show up as know when the file clearly has a .mht extension.  I can also successfully open the file by clicking on it in KM.

I thought before I had done this with a .mht file and windows explorer opened it up.

Can I access my broadcasted .mht report files via KM Document IView?

What could I be doing wrong?

Thanks, Ken Murray

Good day,

I have installed TREX 7 and since the new installation I am getting a preprocessor error, it seems like it can't find the <%hostname%> but I have no idea what the reason for this could be.

I have followed the post installation tasks, but still get this error.

Many Thanks,

Marcel.

Please find log attached:

[Thr 5024] Thu Jul 13 15:06:06 2006

[Thr 5024] ***LOG Q0I=> NiPGetHostByName2: hostname '<%hostname%>' not found: gethostbyname_r (11004: WSANO_DATA: Valid name, no data record of requested type) [ninti.c 361]

[5024] 2006-07-13 15:06:06.842     e     preprocessor     Preprocessor.cpp(00888) :     HTTPHEAD failed for URL http://<%hostname%>/irj/go/km/docs/documents/Exxaro/Documents/sld.pdf : Errorcode -2 , Message   Reader::connect failed, url=http://<%hostname%>/irj/go/km/docs/documents/Exxaro/Documents/sld.pdf

[5024] 2006-07-13 15:06:06.842     e     preprocessor     Preprocessor.cpp(03550) :     HANDLE: DISPATCH - Processing Document with key '/documents/Exxaro/Documents/sld.pdf' failed, returning PREPROCESSOR_ACTIVITY_ERROR (Code 8002)

[2844] 2006-07-13 15:06:06.842     e     preprocessor     Preprocessor.cpp(00888) :     HTTPHEAD failed for URL http://<%hostname%>/irj/go/km/docs/documents/Exxaro/Documents/sld.pdf : Errorcode -2 , Message   Reader::connect failed, url=http://<%hostname%>/irj/go/km/docs/documents/Exxaro/Documents/sld.pdf

[2844] 2006-07-13 15:06:06.842     e     preprocessor     Preprocessor.cpp(03550) :     HANDLE: DISPATCH - Processing Document with key '/documents/Exxaro/Documents/sld.pdf' failed, returning PREPROCESSOR_ACTIVITY_ERROR (Code 8002)

[6012] 2006-07-13 15:06:06.858     e     preprocessor     Preprocessor.cpp(00888) :     HTTPHEAD failed for URL http://<%hostname%>/irj/go/km/docs/documents/Exxaro/Documents/sld.pdf : Errorcode -2 , Message   Reader::connect failed, url=http://<%hostname%>/irj/go/km/docs/documents/Exxaro/Documents/sld.pdf

[6012] 2006-07-13 15:06:06.858     e     preprocessor     Preprocessor.cpp(03550) :     HANDLE: DISPATCH - Processing Document with key '/documents/Exxaro/Documents/sld.pdf' failed, returning PREPROCESSOR_ACTIVITY_ERROR (Code 8002)

Does anyone know how to remove the link associated with the ModifiedBy property? I am hoping that I am just missing an easy configuration option. Any ideas?

Hi Experts,

Is it possible to access KM API's to create resources, folders etc. from outside of the SAP EP/KM.

I have developed Enterprise Application Project and deployed it to SAP J2EE engine. But when I try to call KM API's to create resource I am getting the below exception

java.lang.NoClassDefFoundError: com/sapportals/wcm/crt/CrtClassLoaderRegistry

.

To be able to access the KM repository we need to set the Sharing Reference "knowledgemanagement" in Dynpro applicaitons, but not sure how to add this Sharing Reference to Enterprise Applications.

Please suggest me how to acheive this.

Thanks

Chinna...

Hi All,

Our Portal running in SAP Netweaver 7.01 SP07.  We have many sites created using Web Page Composer 7.01.  We are planning to upgrade the SAP Netweaver Portal to 7.4.

As I have read in the SAP Help Documentation of 7.4, there is no KM transport supported for WPC sites from 7.0 to 7.4.

Kindly let us know, what would be the options to migrate all WPC sites to 7.4 version.  Do we have any limitation in the migration to 7.4?

Thanks in Advance.

Regards,

Venkatesh K

Hi SDN,

I am configuring Knowledge Management in portal for the first time using the following link.

http://help.sap.com/saphelp_nw73/helpdata/en/7f/6ca80f56dc47dda24d8c5a7455f1bc/frameset.htm

Nothing is happening when I click on Global Services/Repository Managers or any other Sub Area in System Administraton->System Configuration->Knowledge Management-> Content Management. Do we need to configure any services before starting here. Please provide me any document.

regards,

Sree.

I have the same issue. I have SAP Netweaver Portal 7.3

Can anybody help me with this problem?

Thank you!

Gustavo

Hi all,

I want to develop KM programs in my NWDS 7.3 by using KMC plug-in that is mentioned in the note 1572813.

But the download link for KMC plug-in in this note is broken.

If anyone of you have this plug-in, could you please send me a copy?

Thanks for help.

Regards,

Nick

Hi,

Quick polls are working in my production portal, but some times quick poll iview disappeared in quick poll administrator. and some times not able to see the polls in quick poll survey

we are getting below the error

No quick poll is currently available

PFA. Kindly help me in resoloving this.

regards

Srinivas

hi Gurus,

We are in the process of integrating DMS with Portal.

we need to build a Portal screen where in a User would be able to load some documents directly on to DMS.

We have incorporated the mySAP ERP DMS Connector for KM.

we feel something is missing out in our configuration steps.

has any one done this configiration, your help is appreciated.

Thanks in advance.

regards,

kris

Hello experts,

I am trying to add a path specific notification in order to send a different E-Mail when subscribing to a specific KM Folder.

I am referencing to the document from Darin Krasle from 2006 "Customizing Notifications Path-Specific Notifications in KM"

I have added the following code to both files, SUBSCRIPTION_de.xml and SUBSCRIPTION_EMAIL.xsl.

To the XLS File, I addded:

....

<xsl:template match="/root">

<xsl:output encoding="UTF-8" />

<xsl:choose>

<xsl:when test="count(area[starts-with($resourceurl, @kmPath)])>0">

<xsl:apply-templates select="area[starts-with($resourceurl,@kmPath)]"/>

</xsl:when>

<xsl:otherwise>

<xsl:apply-templates select="area[@kmPath='default']"/>

</xsl:otherwise>

</xsl:choose>

</xsl:template>

<xsl:template match="area">

.....

and within SUBSCRIPTION_de.xml I doubled the whole notification part and added on top:

<root>

<area kmPath="/Repository/Folder1/Folder2">

<notification>

  <title>

....

but unfortunately nothing happens, the portal still sents the standard E-Mail. Is there any error in my code? Is the document still valid?

Do I have to add any additional information in these two lines:?

<xsl:when test="count(area[starts-with($resourceurl, @kmPath)])>0">

<xsl:apply-templates select="area[starts-with($resourceurl,@kmPath)]"/>

Thanks

Andreas

Hello,

here is a problem we encounter with TREX indexing portal KM repositories.

A) Dev System works fine, for example:

1. Indexing is triggered by "Redindexing" a queue

2. The queue starts working, the TREX monitor shows documents process across the several states (e.g. preprocessing) etc.

3. you can see from the portal log that the user index_service accesses the portal to retrieve content:

LOGIN.OK

User: index_service

IP Address: xxx.xx.xx.xx

Authentication Stack: ticket

Authentication Stack Properties:

logon_policy = default

Login Module Flag Initialize Login Commit Abort Details

1. com.sap.security.core.server.jaas.EvaluateTicketLoginModule SUFFICIENT ok true true

[...]

#10 ume.configuration.active = true

2. com.sap.security.core.server.jaas.SPNegoLoginModule OPTIONAL ok true

3. com.sap.security.core.server.jaas.CreateTicketLoginModule SUFFICIENT ok false

4. com.sap.engine.services.security.server.jaas.BasicPasswordLoginModule REQUISITE ok true

5. com.sap.security.core.server.jaas.CreateTicketLoginModule REQUISITE ok false

Central Checks true

Logon policies are disabled

As you can see the EvaluateTicketLoginModule is successful for user index_service

B) Production System does not work

1. Indexing is triggered by "Redindexing" a queue

2. The queue starts working, the TREX monitor shows all documents size > 10 KByte fail in state "Preprocessing failed" / 401 unauthorized

3. The log on the TREX server shows that the crawler wants to access a certain KM document for content retrieval (with a correct access URL)

4. you can see from the portal log that the user index_service is not able to log on the portal to retrieve content:

User: N/A

IP Address: xxx.xx.xx.xx

Authentication Stack: ticket

Authentication Stack Properties:

logon_policy = default

Login Module Flag Initialize Login Commit Abort Details

1. com.sap.security.core.server.jaas.EvaluateAssertionTicketLoginModule SUFFICIENT ok exception true Received no SAP Authentication Assertion Ticket.

[...]

2. com.sap.security.core.server.jaas.SPNegoLoginModule OPTIONAL ok exception true SPNego authentication has failed during previous attempt.

3. com.sap.security.core.server.jaas.CreateTicketLoginModule SUFFICIENT ok false true

4. com.sap.engine.services.security.server.jaas.BasicPasswordLoginModule REQUISITE ok false false

5. com.sap.security.core.server.jaas.CreateTicketLoginModule REQUISITE ok false true

No logon policy was applied

As you can see the error message during logon is "Recieved no SAP Authenticatino Assertion Ticket".

Of course we THINK that configuration of both systems is the same. But obviously this is not the case.

So Question:

What can cause the fact, that in case B) no assertion ticket is present at the requests from TREX?

What kind of configuration or difference can be the reason?

Best regards

Ingo

Hi Folks,

We are running on SAP Netweaver Portal 7.4 SP 4.
We are facing issue with permission on the WPC Area's.
From the "Content Editor" of the "Accessible Area Management", we are setting the permission for the Area's.
Now we have scenario like the below:
We have Area A  with Read / Write Permission for Users A& B.

Inside Area A, we have sub folders to store documents. We want to give the Writepermission only to User A.

Is that possible?  Kindly help me in this regard.

Regards,

TSB

Hello,

I am getting an exception when I go to my collaboration room and select 'Admin: Room' and 'Admin: Members and Room Relations' in the Collaboration Detailed Navigation.

This is what I got in the log for the exception:

#1.5 #0017A477248000770000006700004610000457C0A8FC2AA3#1222384887433#com.sap.portal.portal#sap.com/irj#com.sap.portal.portal#BrownJ#8826##n/a##f56a68708b5711ddbd3e0017a4772480#SAPEngine_Application_Thread[impl:3]_27##0#0#Error#1#/System/Server#Java###Exception ID:11:21_26/09/08_0017_15055250 
[EXCEPTION]
 {0}#1#com.sapportals.portal.prt.component.PortalComponentException: Error in service call of Portal Component
Component : pcd:portal_content/com.sap.ip.collaboration/Rooms/a0e14f28-245c-2b10-06aa-c39800fb1a4e/workset/com.sap.netweaver.coll.AdminMembersAndRoomRelations_2/com.sap.netweaver.coll.MemberMaintenance
Component class : com.sap.ip.collaboration.roomui.api.maintenance.MaintenanceComponent
User : BrownJ     at com.sapportals.portal.prt.core.PortalRequestManager.handlePortalComponentException(PortalRequestManager.java:973)     at com.sapportals.portal.prt.core.PortalRequestManager.callPortalComponent(PortalRequestManager.java:343)     at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:136)     at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:189)     at com.sapportals.portal.prt.component.PortalComponentResponse.include(PortalComponentResponse.java:215)     at com.sapportals.portal.prt.pom.PortalNode.service(PortalNode.java:645)     at com.sapportals.portal.prt.core.PortalRequestManager.callPortalComponent(PortalRequestManager.java:328)     at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:136)     at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:189)     at com.sapportals.portal.prt.core.PortalRequestManager.runRequestCycle(PortalRequestManager.java:753)     at com.sapportals.portal.prt.connection.ServletConnection.handleRequest(ServletConnection.java:240)     at com.sapportals.portal.prt.dispatcher.Dispatcher$doService.run(Dispatcher.java:524)     at java.security.AccessController.doPrivileged(Native Method)     at com.sapportals.portal.prt.dispatcher.Dispatcher.service(Dispatcher.java:407)     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)     at com.sap.engine.services.servlets_jsp.server.servlet.InvokerServlet.service(InvokerServlet.java:156)     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)     at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.runServlet(HttpHandlerImpl.java:401)     at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.handleRequest(HttpHandlerImpl.java:266)     at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:386)     at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:364)     at com.sap.engine.services.httpserver.server.RequestAnalizer.invokeWebContainer(RequestAnalizer.java:1039)     at com.sap.engine.services.httpserver.server.RequestAnalizer.handle(RequestAnalizer.java:265)     at com.sap.engine.services.httpserver.server.Client.handle(Client.java:95)     at com.sap.engine.services.httpserver.server.Processor.request(Processor.java:175)     at com.sap.engine.core.service630.context.cluster.session.ApplicationSessionMessageListener.process(ApplicationSessionMessageListener.java:33)     at com.sap.engine.core.cluster.impl6.session.MessageRunner.run(MessageRunner.java:41)     at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37)     at java.security.AccessController.doPrivileged(Native Method)     at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:102)     at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:172)
Caused by: com.sapportals.wdf.WdfError     at com.sapportals.wdf.WdfCompositeController.buildComposition(WdfCompositeController.java:679)     at com.sapportals.htmlb.AbstractCompositeComponent.preRender(AbstractCompositeComponent.java:33)     at com.sapportals.htmlb.Container.preRender(Container.java:120)     at com.sapportals.htmlb.Container.preRender(Container.java:120)     at com.sapportals.htmlb.Container.preRender(Container.java:120)     at com.sapportals.portal.htmlb.PrtContext.render(PrtContext.java:406)     at com.sapportals.htmlb.page.DynPage.doOutput(DynPage.java:237)     at com.sapportals.htmlb.page.PageProcessor.handleRequest(PageProcessor.java:129)     at com.sapportals.portal.htmlb.page.PageProcessorComponent.doContent(PageProcessorComponent.java:134)     at com.sapportals.portal.prt.component.AbstractPortalComponent.serviceDeprecated(AbstractPortalComponent.java:209)     at com.sapportals.portal.prt.component.AbstractPortalComponent.service(AbstractPortalComponent.java:114)     at com.sapportals.portal.prt.core.PortalRequestManager.callPortalComponent(PortalRequestManager.java:328)     ... 29 more

#
#1.5 #0017A477248000770000006900004610000457C0A8FC363A#1222384887433#com.sap.portal.prt.runtime#sap.com/irj#com.sap.portal.prt.runtime#BrownJ#8826##n/a##f56a68708b5711ddbd3e0017a4772480#SAPEngine_Application_Thread[impl:3]_27##0#0#Error##Java###11:21_26/09/08_0017_15055250 
[EXCEPTION]
 {0}#1#com.sapportals.wdf.WdfError
     at com.sapportals.wdf.WdfCompositeController.buildComposition(WdfCompositeController.java:679)     at com.sapportals.htmlb.AbstractCompositeComponent.preRender(AbstractCompositeComponent.java:33)     at com.sapportals.htmlb.Container.preRender(Container.java:120)     at com.sapportals.htmlb.Container.preRender(Container.java:120)     at com.sapportals.htmlb.Container.preRender(Container.java:120)     at com.sapportals.portal.htmlb.PrtContext.render(PrtContext.java:406)     at com.sapportals.htmlb.page.DynPage.doOutput(DynPage.java:237)     at com.sapportals.htmlb.page.PageProcessor.handleRequest(PageProcessor.java:129)     at com.sapportals.portal.htmlb.page.PageProcessorComponent.doContent(PageProcessorComponent.java:134)     at com.sapportals.portal.prt.component.AbstractPortalComponent.serviceDeprecated(AbstractPortalComponent.java:209)     at com.sapportals.portal.prt.component.AbstractPortalComponent.service(AbstractPortalComponent.java:114)     at com.sapportals.portal.prt.core.PortalRequestManager.callPortalComponent(PortalRequestManager.java:328)     at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:136)     at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:189)     at com.sapportals.portal.prt.component.PortalComponentResponse.include(PortalComponentResponse.java:215)     at com.sapportals.portal.prt.pom.PortalNode.service(PortalNode.java:645)     at com.sapportals.portal.prt.core.PortalRequestManager.callPortalComponent(PortalRequestManager.java:328)     at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:136)     at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:189)     at com.sapportals.portal.prt.core.PortalRequestManager.runRequestCycle(PortalRequestManager.java:753)     at com.sapportals.portal.prt.connection.ServletConnection.handleRequest(ServletConnection.java:240)     at com.sapportals.portal.prt.dispatcher.Dispatcher$doService.run(Dispatcher.java:524)     at java.security.AccessController.doPrivileged(Native Method)     at com.sapportals.portal.prt.dispatcher.Dispatcher.service(Dispatcher.java:407)     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)     at com.sap.engine.services.servlets_jsp.server.servlet.InvokerServlet.service(InvokerServlet.java:156)     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)     at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.runServlet(HttpHandlerImpl.java:401)     at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.handleRequest(HttpHandlerImpl.java:266)     at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:386)     at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:364)     at com.sap.engine.services.httpserver.server.RequestAnalizer.invokeWebContainer(RequestAnalizer.java:1039)     at com.sap.engine.services.httpserver.server.RequestAnalizer.handle(RequestAnalizer.java:265)     at com.sap.engine.services.httpserver.server.Client.handle(Client.java:95)     at com.sap.engine.services.httpserver.server.Processor.request(Processor.java:175)     at com.sap.engine.core.service630.context.cluster.session.ApplicationSessionMessageListener.process(ApplicationSessionMessageListener.java:33)     at com.sap.engine.core.cluster.impl6.session.MessageRunner.run(MessageRunner.java:41)     at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37)     at java.security.AccessController.doPrivileged(Native Method)     at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:102)     at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:172)
--- Nested WDF Error -----------------------
com.sapportals.wdf.WdfException     at com.sapportals.wdf.WdfCompositeController.doInitialization(WdfCompositeController.java:302)     at com.sapportals.wdf.WdfCompositeController.buildComposition(WdfCompositeController.java:660)     at com.sapportals.htmlb.AbstractCompositeComponent.preRender(AbstractCompositeComponent.java:33)     at com.sapportals.htmlb.Container.preRender(Container.java:120)     at com.sapportals.htmlb.Container.preRender(Container.java:120)     at com.sapportals.htmlb.Container.preRender(Container.java:120)     at com.sapportals.portal.htmlb.PrtContext.render(PrtContext.java:406)     at com.sapportals.htmlb.page.DynPage.doOutput(DynPage.java:237)     at com.sapportals.htmlb.page.PageProcessor.handleRequest(PageProcessor.java:129)     at com.sapportals.portal.htmlb.page.PageProcessorComponent.doContent(PageProcessorComponent.java:134)     at com.sapportals.portal.prt.component.AbstractPortalComponent.serviceDeprecated(AbstractPortalComponent.java:209)     at com.sapportals.portal.prt.component.AbstractPortalComponent.service(AbstractPortalComponent.java:114)     at com.sapportals.portal.prt.core.PortalRequestManager.callPortalComponent(PortalRequestManager.java:328)     at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:136)     at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:189)     at com.sapportals.portal.prt.component.PortalComponentResponse.include(PortalComponentResponse.java:215)     at com.sapportals.portal.prt.pom.PortalNode.service(PortalNode.java:645)     at com.sapportals.portal.prt.core.PortalRequestManager.callPortalComponent(PortalRequestManager.java:328)     at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:136)     at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:189)     at com.sapportals.portal.prt.core.PortalRequestManager.runRequestCycle(PortalRequestManager.java:753)     at com.sapportals.portal.prt.connection.ServletConnection.handleRequest(ServletConnection.java:240)     at com.sapportals.portal.prt.dispatcher.Dispatcher$doService.run(Dispatcher.java:524)     at java.security.AccessController.doPrivileged(Native Method)     at com.sapportals.portal.prt.dispatcher.Dispatcher.service(Dispatcher.java:407)     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)     at com.sap.engine.services.servlets_jsp.server.servlet.InvokerServlet.service(InvokerServlet.java:156)     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)     at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.runServlet(HttpHandlerImpl.java:401)     at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.handleRequest(HttpHandlerImpl.java:266)     at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:386)     at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:364)     at com.sap.engine.services.httpserver.server.RequestAnalizer.invokeWebContainer(RequestAnalizer.java:1039)     at com.sap.engine.services.httpserver.server.RequestAnalizer.handle(RequestAnalizer.java:265)     at com.sap.engine.services.httpserver.server.Client.handle(Client.java:95)     at com.sap.engine.services.httpserver.server.Processor.request(Processor.java:175)     at com.sap.engine.core.service630.context.cluster.session.ApplicationSessionMessageListener.process(ApplicationSessionMessageListener.java:33)     at com.sap.engine.core.cluster.impl6.session.MessageRunner.run(MessageRunner.java:41)     at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37)     at java.security.AccessController.doPrivileged(Native Method)     at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:102)     at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:172)
--- Nested WDF Exception -----------------------
java.lang.NullPointerException     at com.sap.ip.collaboration.room.impl.RoomRoleSet.getUserIDs(RoomRoleSet.java:151)     at com.sap.ip.collaboration.room.impl.RoomInfoRuntime.getRoomPrincipals(RoomInfoRuntime.java:485)     at com.sap.ip.collaboration.room.impl.RoomObject.getRoomPrincipals(RoomObject.java:2086)     at com.sap.ip.collaboration.roomui.api.maintenance.model.MaintenanceInfo.getMembers(MaintenanceInfo.java:1098)     at com.sap.ip.collaboration.roomui.api.maintenance.model.MaintenanceInfo.getSortedMembers(MaintenanceInfo.java:835)     at com.sap.netweaver.coll.ui.room.api.base.controls.helper.RoomMemberTable.initialize(RoomMemberTable.java:82)     at com.sap.ip.collaboration.roomui.api.maintenance.ui.MembersUI.render(MembersUI.java:113)     at com.sap.ip.collaboration.roomui.api.maintenance.ui.MemberMaintenanceControl.render(MemberMaintenanceControl.java:93)     at com.sapportals.wdf.layout.VerticalLayout.renderControls(VerticalLayout.java:43)     at com.sapportals.wdf.stack.Pane.render(Pane.java:155)     at com.sapportals.wdf.stack.PaneStack.render(PaneStack.java:73)     at com.sapportals.wdf.WdfCompositeController.doInitialization(WdfCompositeController.java:282)     at com.sapportals.wdf.WdfCompositeController.buildComposition(WdfCompositeController.java:660)     at com.sapportals.htmlb.AbstractCompositeComponent.preRender(AbstractCompositeComponent.java:33)     at com.sapportals.htmlb.Container.preRender(Container.java:120)     at com.sapportals.htmlb.Container.preRender(Container.java:120)     at com.sapportals.htmlb.Container.preRender(Container.java:120)     at com.sapportals.portal.htmlb.PrtContext.render(PrtContext.java:406)     at com.sapportals.htmlb.page.DynPage.doOutput(DynPage.java:237)     at com.sapportals.htmlb.page.PageProcessor.handleRequest(PageProcessor.java:129)     at com.sapportals.portal.htmlb.page.PageProcessorComponent.doContent(PageProcessorComponent.java:134)     at com.sapportals.portal.prt.component.AbstractPortalComponent.serviceDeprecated(AbstractPortalComponent.java:209)     at com.sapportals.portal.prt.component.AbstractPortalComponent.service(AbstractPortalComponent.java:114)     at com.sapportals.portal.prt.core.PortalRequestManager.callPortalComponent(PortalRequestManager.java:328)     at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:136)     at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:189)     at com.sapportals.portal.prt.component.PortalComponentResponse.include(PortalComponentResponse.java:215)     at com.sapportals.portal.prt.pom.PortalNode.service(PortalNode.java:645)     at com.sapportals.portal.prt.core.PortalRequestManager.callPortalComponent(PortalRequestManager.java:328)     at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:136)     at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:189)     at com.sapportals.portal.prt.core.PortalRequestManager.runRequestCycle(PortalRequestManager.java:753)     at com.sapportals.portal.prt.connection.ServletConnection.handleRequest(ServletConnection.java:240)     at com.sapportals.portal.prt.dispatcher.Dispatcher$doService.run(Dispatcher.java:524)     at java.security.AccessController.doPrivileged(Native Method)     at com.sapportals.portal.prt.dispatcher.Dispatcher.service(Dispatcher.java:407)     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)     at com.sap.engine.services.servlets_jsp.server.servlet.InvokerServlet.service(InvokerServlet.java:156)     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)     at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.runServlet(HttpHandlerImpl.java:401)     at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.handleRequest(HttpHandlerImpl.java:266)     at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:386)     at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:364)     at com.sap.engine.services.httpserver.server.RequestAnalizer.invokeWebContainer(RequestAnalizer.java:1039)     at com.sap.engine.services.httpserver.server.RequestAnalizer.handle(RequestAnalizer.java:265)     at com.sap.engine.services.httpserver.server.Client.handle(Client.java:95)     at com.sap.engine.services.httpserver.server.Processor.request(Processor.java:175)     at com.sap.engine.core.service630.context.cluster.session.ApplicationSessionMessageListener.process(ApplicationSessionMessageListener.java:33)     at com.sap.engine.core.cluster.impl6.session.MessageRunner.run(MessageRunner.java:41)     at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37)     at java.security.AccessController.doPrivileged(Native Method)     at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:102)     at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:172)

Could you please tell me why I am getting this exception?

Thanks,

Ajay