Exception while merging data with XDP using FormDataIntegration

Hi All,
I am trying to merge the XML data into and XDP to create a PDF using FormDataIntegration.
But i got the following error:
com.adobe.livecycle.formdataintegration.client.ImportFormDataException : Operation aborted: malformed PDF or data.
at com.adobe.livecycle.formdataintegration.server.FormData.importData(Fo rmData.java:89)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl. java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces sorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at com.adobe.idp.dsc.component.impl.DefaultPOJOInvokerImpl.invoke(Defaul tPOJOInvokerImpl.java:181)
at com.adobe.idp.dsc.interceptor.impl.InvocationInterceptor.intercept(In vocationInterceptor.java:134)
at com.adobe.idp.dsc.interceptor.impl.RequestInterceptorChainImpl.procee d(RequestInterceptorChainImpl.java:44)
at com.adobe.idp.dsc.transaction.interceptor.TransactionInterceptor$1.do InTransaction(TransactionInterceptor.java:74)
at com.adobe.idp.dsc.transaction.impl.ejb.adapter.EjbTransactionBMTAdapt erBean.doRequiresNew(EjbTransactionBMTAdapterBean.java:218)
at com.adobe.idp.dsc.transaction.impl.ejb.adapter.EjbTransactionBMTAdapt er_jmbvky_ELOImpl.doRequiresNew(EjbTransactionBMTAdapter_jmbvky_ELOImp l.java:63
at com.adobe.idp.dsc.transaction.impl.ejb.EjbTransactionProvider.execute (EjbTransactionProvider.java:133)
at com.adobe.idp.dsc.transaction.interceptor.TransactionInterceptor.inte rcept(TransactionInterceptor.java:72)
at com.adobe.idp.dsc.interceptor.impl.RequestInterceptorChainImpl.procee d(RequestInterceptorChainImpl.java:44)
at com.adobe.idp.dsc.interceptor.impl.InvalidStateInterceptor.intercept( InvalidStateInterceptor.java:37)
at com.adobe.idp.dsc.interceptor.impl.RequestInterceptorChainImpl.procee d(RequestInterceptorChainImpl.java:44)
at com.adobe.idp.dsc.interceptor.impl.AuthorizationInterceptor.intercept (AuthorizationInterceptor.java:80)
at com.adobe.idp.dsc.interceptor.impl.RequestInterceptorChainImpl.procee d(RequestInterceptorChainImpl.java:44)
at com.adobe.idp.dsc.engine.impl.ServiceEngineImpl.invoke(ServiceEngineI mpl.java:113)
at com.adobe.idp.dsc.routing.Router.routeRequest(Router.java:102)
at com.adobe.idp.dsc.provider.impl.base.AbstractMessageReceiver.invoke(A bstractMessageReceiver.java:298)
at com.adobe.idp.dsc.provider.impl.soap.axis.sdk.SoapSdkEndpoint.invokeC all(SoapSdkEndpoint.java:125)
at com.adobe.idp.dsc.provider.impl.soap.axis.sdk.SoapSdkEndpoint.invoke( SoapSdkEndpoint.java:77)
at sun.reflect.GeneratedMethodAccessor292.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces sorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.axis.providers.java.RPCProvider.invokeMethod(RPCProvider.j ava:397)
at org.apache.axis.providers.java.RPCProvider.processMessage(RPCProvider .java:186)
at org.apache.axis.providers.java.JavaProvider.invoke(JavaProvider.java: 323)
at org.apache.axis.strategies.InvocationStrategy.visit(InvocationStrateg y.java:32)
at org.apache.axis.SimpleChain.doVisiting(SimpleChain.java:118)
at org.apache.axis.SimpleChain.invoke(SimpleChain.java:83)
at org.apache.axis.handlers.soap.SOAPService.invoke(SOAPService.java:454 )
at org.apache.axis.server.AxisServer.invoke(AxisServer.java:281)
at org.apache.axis.transport.http.AxisServlet.doPost(AxisServlet.java:69 9)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:763)
at org.apache.axis.transport.http.AxisServletBase.service(AxisServletBas e.java:327)
at javax.servlet.http.HttpServlet.service(HttpServl