I have mapped simple Composite id and am getting the following exception. Any idea whats wrong and where???

Hibernate version:
3.0

Mapping documents:
<composite-id>
<key-property node="customerId" name="customerId" column= "CustomerID" type="java.lang.String"/>
<key-property node="locationId" name="locationId" column="LocationID" type="java.lang.String"/>
</composite-id>

Full stack trace of any exception that occurs:

15:02:58,813 INFO [TilesRequestProcessor] Tiles definition factory found for request processor ''.
15:02:59,063 INFO [Environment] Hibernate 3.0
15:02:59,094 INFO [Environment] hibernate.properties not found
15:02:59,094 INFO [Environment] using CGLIB reflection optimizer
15:02:59,094 INFO [Environment] using JDK 1.4 java.sql.Timestamp handling
15:02:59,469 INFO [Configuration] configuring from resource: /hibernate.cfg.xml
15:02:59,469 INFO [Configuration] Configuration resource: /hibernate.cfg.xml
15:02:59,907 INFO [Configuration] Mapping resource: xmlCustomer.hbm.xml
15:03:00,219 INFO [HbmBinder] Mapping class: com.sbs.salesstrat.xml.info.XmlCustomerInfo -> Customer
15:03:00,407 INFO [Configuration] Mapping resource: xmlContact.hbm.xml
15:03:00,469 INFO [HbmBinder] Mapping class: com.sbs.salesstrat.xml.info.XmlContactInfo -> Contact
15:03:00,485 INFO [Configuration] Mapping resource: xmlDivPlant.hbm.xml
15:03:00,625 ERROR [XMLHelper] Error parsing XML: XML InputStream(9) Attribute "node" must be declared for element type "key-property".
15:03:00,641 ERROR [XMLHelper] Error parsing XML: XML InputStream(10) Attribute "node" must be declared for element type "key-property".
15:03:00,657 INFO [STDOUT] %%%% Error Creating SessionFactory %%%%
15:03:00,657 INFO [STDOUT] org.hibernate.MappingException: Error reading resource: xmlDivPlant.hbm.xml
at org.hibernate.cfg.Configuration.addResource(Configuration.java:448)
at org.hibernate.cfg.Configuration.parseMappingElement(Configuration.java:1312)
at org.hibernate.cfg.Configuration.parseSessionFactory(Configuration.java:1284)
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1266)
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1233)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1161)
at com.sbs.salesstrat.common.data.HibernateSessionFactory.currentSession(HibernateSessionFactory.java:32)
at com.sbs.salesstrat.common.data.AppuserDS.get(AppuserDS.java:19)
at com.sbs.salesstrat.common.business.AppuserBS.authenticate(AppuserBS.java:18)
at com.sbs.salesstrat.common.web.action.LoginAction.login(LoginAction.java:31)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:274)
at org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:194)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:39)
at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:159)
at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:59)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
at java.lang.Thread.run(Thread.java:534)
Caused by: org.hibernate.MappingException: invalid mapping
at org.hibernate.cfg.Configuration.addInputStream(Configuration.java:395)
at org.hibernate.cfg.Configuration.addResource(Configuration.java:445)
... 40 more
Caused by: org.xml.sax.SAXParseException: Attribute "node" must be declared for element type "key-property".
at org.apache.xerces.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source)
at org.apache.xerces.util.ErrorHandlerWrapper.error(Unknown Source)
at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
at org.apache.xerces.impl.dtd.XMLDTDValidator.addDTDDefaultAttrsAndValidate(Unknown Source)
at org.apache.xerces.impl.dtd.XMLDTDValidator.handleStartElement(Unknown Source)
at org.apache.xerces.impl.dtd.XMLDTDValidator.emptyElement(Unknown Source)
at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanStartElement(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
at org.dom4j.io.SAXReader.read(SAXReader.java:334)
at org.hibernate.cfg.Configuration.addInputStream(Configuration.java:394)
... 41 more
15:03:00,672 INFO [STDOUT] this is the main exception java.lang.Exception: AppuserBS.authenticate().null
15:03:00,672 INFO [STDOUT] in the exception function33


Name and version of the database you are using:
MySql 5.0

Why, that would be

To paraphrase: key-property doesn't have a "node" attribute. Remove it.

Pardon...

key-property does have a "node" attribute. the same mapping works fine in one project and in the other it gives this error :(

Not according to your exception, it doesn't. Is your mapping file referring to a 2.0 DTD instead of a 3.0 DTD? Your file can't be parsed because you're giving it the wrong instructions.

Well unfortunately the mapping file is refering to the 3.0 DTD

Then all I can suggest is that you track down the DTD being used (it'll be in hibernate3.jar, org/hibernate/hibernate-mapping-3.0.dtd) and verify that ELEMENT key-property has a matching ATTLIST for node. If it doesn't, replace the jar with the correct one. If it does, all I can think of is that your classpath contains a different jar somewhere, and you're loading the wrong one.