The SFSB causing this error is as given below

package com.criti.spectrum.ordermgmnt.purchaseorder;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;

import javax.ejb.Remove;
import javax.ejb.Stateful;
import javax.faces.convert.ConverterException;
import javax.faces.event.ActionEvent;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.PersistenceContextType;

import org.jboss.seam.annotations.Begin;
import org.jboss.seam.annotations.In;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.Out;
import org.jboss.seam.annotations.web.RequestParameter;

import com.criti.spectrum.base.SpectrumUIBaseAction;
import com.criti.spectrum.commons.CommonQueriesMasterForAuthorization;
import com.criti.spectrum.model.AuthUsers;
import com.criti.spectrum.model.masters.MstCurrency;
import com.criti.spectrum.model.masters.MstDocumentTypes;
import com.criti.spectrum.model.masters.MstSite;
import com.criti.spectrum.model.order.OrderHdr;
import com.criti.spectrum.util.DTOComparator;

@Stateful
@Name("purchaseOrderQueries")
public class PurchaseOrderQueriesImpl extends SpectrumUIBaseAction implements
          PurchaseOrderQueries {

     @PersistenceContext(type = PersistenceContextType.EXTENDED)
     private EntityManager em;

     private String sortField = "getId.getDocumentNumber";
     private boolean sortAscending = true;

     @In(value = "currentUser", required = true)
     private AuthUsers currentUser;

     @In(required = false)
     @Out(required = false)
     List<MstCurrency> mstCurrencylist;

     @In(required = false)
     // @Out(required = false).. should not use..
     private OrderHdr orderHdrEntity;

     List<OrderHdr> orderHdrList;

     List<OrderHdr> orderHdrListForClose;

     List<OrderHdr> orderHdrListForEdit;

     List<OrderHdr> orderHdrListForApproval;

     List<MstDocumentTypes> mstDocumentTypeslist;

     int pageIndex = 1;

     @RequestParameter
     String docNo;

     @RequestParameter
     String siteCode;

     @RequestParameter
     String finYr;

     @In(required = false)
     @Out(required = false)
     List<OrderHdr> orderHdrInboxList;

     @In(required = false, create = true)
     private CommonQueriesMasterForAuthorization commonQueriesMasterForAuthorization;

     public List<OrderHdr> getOrderHdrList() {
          messageLogger.info("MasterAction: getOrderHdrList()");
          messageLogger.info("MasterAction: getOrderHdrList():orderHdrEntity--> "
                    + orderHdrEntity);

          // This is just for Purchase ORder hence document types has to be
          // Purcahse order only

          String docNo = "";
          String documentTypes = getProperty("DocumentType.PO");
          StringBuffer siteCodeString = getSiteListForTransaction("task.PO.create");

          if (orderHdrEntity != null && orderHdrEntity.getId() != null
                    && orderHdrEntity.getId().getDocumentNumber() != null
                    && !orderHdrEntity.getId().getDocumentNumber().equals("")) {

               messageLogger.info("getOrderHdrList():DocumentNumber--> "
                         + orderHdrEntity.getId().getDocumentNumber());

               if (orderHdrEntity.getId().getDocumentNumber() != null
                         && orderHdrEntity.getId().getDocumentNumber()
                                   .equalsIgnoreCase("")) {
                    docNo = orderHdrEntity.getId().getDocumentNumber() + "%";
               }

               orderHdrList = em
                         .createQuery(
                                   "from OrderHdr o where "
                                             + "o.mstDocumentTypes.documentType= :documentType "
                                             + " and o.id.documentNumber like :documentNumber and o.status= :status and o.mstSite.siteCode in "
                                             + siteCodeString.toString()).setParameter(
                                   "documentType", documentTypes).setParameter(
                                   "documentNumber",
                                   orderHdrEntity.getId().getDocumentNumber() + "%")
                         .setParameter("status", true).getResultList();
               messageLogger.info("MasterAction: getOrderHdrList().size-->"
                         + orderHdrList.size());
               return orderHdrList;
          } else if (orderHdrList == null) {

               orderHdrList = em
                         .createQuery(
                                   "from OrderHdr o where "
                                             + "o.mstDocumentTypes.documentType= :documentType and o.status= :status and o.mstSite.siteCode in "
                                             + siteCodeString.toString()).setParameter(
                                   "documentType", documentTypes).setParameter(
                                   "status", true).getResultList();
               messageLogger.info("MasterAction: getOrderHdrList().size-->"
                         + orderHdrList.size());
               return orderHdrList;

          } else {
               return orderHdrList;
          }

     }

     public List<OrderHdr> getOrderHdrListForApproval() {
          messageLogger.info("MasterAction: getOrderHdrList()");
          messageLogger.info("MasterAction: getOrderHdrList():orderHdrEntity--> "
                    + orderHdrEntity);

          // This is just for Purchase ORder hence document types has to be
          // Purcahse order only

          String docNo = "";
          String documentTypes = getProperty("DocumentType.PO");
          String approvalStatus = getProperty("PO.ApprovalStatus");

          StringBuffer siteCodeString = getSiteListForTransaction("task.PO.approve");

          if (orderHdrEntity != null && orderHdrEntity.getId() != null
                    && orderHdrEntity.getId().getDocumentNumber() != null
                    && !orderHdrEntity.getId().getDocumentNumber().equals("")) {

               messageLogger.info("getOrderHdrList():DocumentNumber--> "
                         + orderHdrEntity.getId().getDocumentNumber());

               if (orderHdrEntity.getId().getDocumentNumber() != null
                         && orderHdrEntity.getId().getDocumentNumber()
                                   .equalsIgnoreCase("")) {
                    docNo = orderHdrEntity.getId().getDocumentNumber() + "%";
               }

               orderHdrListForApproval = em
                         .createQuery(
                                   "from OrderHdr o where "
                                             + "o.mstDocumentTypes.documentType= :documentType "
                                             + " and o.id.documentNumber like :documentNumber  and (o.nextApproverId = :approverId or o.nextApproverId in "
                                             + getCurrentUserRoleListStringForQuery()
                                             + ")  "
                                             + " and o.nextApprovalAt=:nextApprovalAt and o.processInstanceId is not null and o.approvedLevel =:approvedLevel "
                                             + "and o.status= :status and o.mstSite.siteCode in "
                                             + siteCodeString.toString()).setParameter(
                                   "documentType", documentTypes).setParameter(
                                   "documentNumber",
                                   orderHdrEntity.getId().getDocumentNumber() + "%")
                         .setParameter("approvedLevel", approvalStatus)
                         .setParameter("approverId", currentUser.getUserId())
                         .setParameter("nextApprovalAt", getSiteCode())
                         .setParameter("status", true).getResultList();
               messageLogger.info("MasterAction: getOrderHdrList().size-->"
                         + orderHdrListForApproval.size());
          } else if (orderHdrListForApproval == null) {

               orderHdrListForApproval = em
                         .createQuery(
                                   "from OrderHdr o where "
                                             + "o.mstDocumentTypes.documentType= :documentType and o.approvedLevel =:approvedLevel "
                                             + "and o.nextApprovalAt=:nextApprovalAt and o.status= :status and o.processInstanceId is not null and (o.nextApproverId = :approverId or o.nextApproverId in "
                                             + getCurrentUserRoleListStringForQuery()
                                             + " ) and o.mstSite.siteCode in "
                                             + siteCodeString.toString()).setParameter(
                                   "documentType", documentTypes).setParameter(
                                   "status", true).setParameter("approvedLevel",
                                   approvalStatus).setParameter("approverId",
                                   currentUser.getUserId()).setParameter(
                                   "nextApprovalAt", getSiteCode()).getResultList();
               messageLogger.info("MasterAction: getOrderHdrList().size-->"
                         + orderHdrListForApproval.size());

          }

          return orderHdrListForApproval;

     }

     public List<OrderHdr> getOrderHdrListForClose() {

          messageLogger
                    .info("purchaseOrderQueries: orderHdrListForClose():orderHdrEntity--> "
                              + orderHdrEntity);
          String documentTypes = getProperty("DocumentType.PO");
          StringBuffer siteCodeString = getSiteListForTransaction("task.PO.close");

          if (orderHdrEntity != null && orderHdrEntity.getId() != null
                    && orderHdrEntity.getId().getDocumentNumber() != null
                    && !orderHdrEntity.getId().getDocumentNumber().equals("")) {

               messageLogger.info("getOrderHdrListForClose():DocumentNumber--> "
                         + orderHdrEntity.getId().getDocumentNumber());

               orderHdrListForClose = em
                         .createQuery(
                                   "from OrderHdr o where o.mstDocumentTypes.documentType= :documentType "
                                             + " and o.id.documentNumber like :documentNumber and o.status= :status and o.isClosed= :isClosed and o.mstSite.siteCode in "
                                             + siteCodeString.toString()).setParameter(
                                   "documentType", documentTypes).setParameter(
                                   "documentNumber",
                                   orderHdrEntity.getId().getDocumentNumber() + "%")
                         .setParameter("isClosed", false).setParameter("status",
                                   true).getResultList();
               messageLogger.info("PO queries :getOrderHdrListForClose.size-->"
                         + orderHdrListForClose.size());
               return orderHdrListForClose;
          } else if (orderHdrListForClose == null) {
               orderHdrListForClose = em
                         .createQuery(
                                   "from OrderHdr o where o.mstDocumentTypes.documentType= :documentType "
                                             + " and o.isClosed= :isClosed and o.status= :status and o.mstSite.siteCode in "
                                             + siteCodeString.toString()).setParameter(
                                   "documentType", documentTypes).setParameter(
                                   "isClosed", false).setParameter("status", true)
                         .getResultList();
               messageLogger.info("PO queries : getOrderHdrListForClose().size-->"
                         + orderHdrListForClose.size());
               return orderHdrListForClose;

          } else {
               return orderHdrListForClose;
          }

     }

     public List<OrderHdr> getOrderHdrListForEdit() {

          messageLogger
                    .info("purchaseOrderQueries: orderHdrListForClose():orderHdrEntity--> "
                              + orderHdrEntity);

          String documentTypes = getProperty("DocumentType.PO");

          if (orderHdrEntity != null && orderHdrEntity.getId() != null
                    && orderHdrEntity.getId().getDocumentNumber() != null
                    && !orderHdrEntity.getId().getDocumentNumber().equals("")) {

               messageLogger.info("getOrderHdrList():DocumentNumber--> "
                         + orderHdrEntity.getId().getDocumentNumber());

               orderHdrListForEdit = em
                         .createQuery(
                                   "from OrderHdr o where o.mstDocumentTypes.documentType= :documentType "
                                             + "and o.status= :status and o.id.documentNumber like :documentNumber and o.isClosed= :isClosed ")
                         .setParameter("documentType", documentTypes).setParameter(
                                   "documentNumber",
                                   orderHdrEntity.getId().getDocumentNumber() + "%")
                         .setParameter("isClosed", false).setParameter("status",
                                   true).getResultList();
               messageLogger.info("PO queries : getOrderHdrList().size-->"
                         + orderHdrListForEdit.size());
               return orderHdrListForEdit;
          } else if (orderHdrListForEdit == null) {
               orderHdrListForEdit = em
                         .createQuery(
                                   "from OrderHdr o where o.mstDocumentTypes.documentType= :documentType "
                                             + " and o.isClosed= :isClosed and o.status= :status")
                         .setParameter("documentType", documentTypes).setParameter(
                                   "status", true).setParameter("isClosed", false)
                         .getResultList();
               messageLogger.info("PO queries : getOrderHdrListFor Edit().size-->"
                         + orderHdrListForEdit.size());
               return orderHdrListForEdit;

          } else {
               return orderHdrListForEdit;
          }

     }

     @Remove
     @org.jboss.seam.annotations.Destroy
     public void destroy() {

     }

     public void inboxFilterAction() {
          // em.clear();

          List<MstSite> lst = commonQueriesMasterForAuthorization
                    .getMstSiteListForTransaction("CREATE_PURCHASE_ORDER");
          List<String> strSitecode = new ArrayList<String>();
          for (MstSite mstSite : lst) {
               strSitecode.add(mstSite.getSiteCode());
          }
          StringBuffer sites = getSiteListStringForQuery(strSitecode);
          String backOffDoc = "";
          for (MstDocumentTypes docTye : mstDocumentTypeslist) {
               if (backOffDoc.equals(""))
                    backOffDoc += "'" + docTye.getDocumentType() + "'";
               else
                    backOffDoc += ",'" + docTye.getDocumentType() + "'";
          }
          if (backOffDoc.equals(""))
               backOffDoc += "''";

          List<OrderHdr> finalList = new ArrayList<OrderHdr>();
          String docNo = "";
          if (orderHdrEntity != null
                    && orderHdrEntity.getMstDocumentTypes().getDocumentType() != null
                    && orderHdrEntity.getId().getDocumentNumber() != null) {
               em.clear();
               orderHdrInboxList = em
                         .createQuery(
                                   " from OrderHdr o where "
                                             + "o.mstDocumentTypes.documentType= :documentType and o.status =:status "
                                             + " and o.id.documentNumber like :documentNumber and o.id.siteCode IN "
                                             + sites + " ").setParameter(
                                   "documentType",
                                   orderHdrEntity.getMstDocumentTypes()
                                             .getDocumentType()).setParameter("status",
                                   true).setParameter("documentNumber",
                                   orderHdrEntity.getId().getDocumentNumber() + "%")
                         .getResultList();

          }

          else if (orderHdrEntity != null
                    && orderHdrEntity.getId().getDocumentNumber() != null) {
               em.clear();
               orderHdrInboxList = em
                         .createQuery(
                                   "from OrderHdr o where "
                                             + "  o.id.documentNumber like :documentNumber and o.status =:status and o.mstDocumentTypes.documentType in ("
                                             + backOffDoc + ") and o.id.siteCode IN "
                                             + sites + " ").setParameter(
                                   "documentNumber",
                                   orderHdrEntity.getId().getDocumentNumber() + "%")
                         .setParameter("status", true).getResultList();

          } else if (orderHdrEntity != null
                    && orderHdrEntity.getMstDocumentTypes().getDocumentType() != null) {
               orderHdrInboxList = em
                         .createQuery(
                                   "from OrderHdr o where "
                                             + "o.mstDocumentTypes.documentType= :documentType and o.status =:status and o.id.siteCode IN "
                                             + sites + " ").setParameter(
                                   "documentType",
                                   orderHdrEntity.getMstDocumentTypes()
                                             .getDocumentType()).setParameter("status",
                                   true).getResultList();
          } else {
               orderHdrInboxList = em
                         .createQuery(
                                   "from OrderHdr o where o.status =:status and o.mstDocumentTypes.documentType in ("
                                             + backOffDoc
                                             + ") and and o.id.siteCode IN "
                                             + sites
                                             + " ").setParameter("status", true)
                         .getResultList();
          }

          if (orderHdrEntity != null && orderHdrEntity.getStatusArray() != null
                    && orderHdrEntity.getStatusArray().length > 0) {

               Arrays.sort(orderHdrEntity.getStatusArray());
               int i = Arrays.binarySearch(orderHdrEntity.getStatusArray(), "All");
               // System.out.println(i+">><<><"+orderHdrEntity.getStatusArray());
               if (i < 0) {
                    for (String status : orderHdrEntity.getStatusArray()) {
                         for (OrderHdr hdr : orderHdrInboxList) {
                              if (getStatus(hdr).equalsIgnoreCase(status)) {
                                   finalList.add(hdr);
                              }
                         }

                    }
               } else {
                    finalList.addAll(orderHdrInboxList);
               }
               orderHdrInboxList = finalList;
          }
          for (OrderHdr a : orderHdrInboxList) {
               messageLogger.info(a.getId().getDocumentNumber());
               messageLogger.info(a.getMstDocumentTypes().getDocumentTypeDesc());
               messageLogger.info(a.getMstSupplier().getSupplierName());
               messageLogger.info(a.getMstSite().getSiteOfficialName());
          }
          pageIndex = 1;
     }

     @Begin(join = true)
     public List<OrderHdr> getOrderHdrInboxList() {

          List<MstSite> lst = commonQueriesMasterForAuthorization
                    .getMstSiteListForTransaction("Menu.Inbox");
          List<String> strSitecode = new ArrayList<String>();
          for (MstSite mstSite : lst) {
               strSitecode.add(mstSite.getSiteCode());
          }
          StringBuffer sites = getSiteListStringForQuery(strSitecode);

          if (orderHdrInboxList == null) {
               orderHdrInboxList = em
                         .createQuery(
                                   " from OrderHdr o where o.status =:status and o.mstDocumentTypes.documentType <>:SOB "
                                             + "and o.id.siteCode IN "
                                             + sites
                                             + "  order by o.id.documentNumber ")
                         .setParameter("status", true).setParameter("SOB", "SO201")
                         .getResultList();

               for (OrderHdr a : orderHdrInboxList) {
                    messageLogger.info(a.getId().getDocumentNumber());
                    messageLogger.info(a.getMstDocumentTypes()
                              .getDocumentTypeDesc());
                    messageLogger.info(a.getMstSupplier().getSupplierName());
                    messageLogger.info(a.getMstSite().getSiteOfficialName());
               }
               return orderHdrInboxList;

          } else {

               return orderHdrInboxList;
          }

     }

     public void setOrderHdrInboxList(List<OrderHdr> orderHdrInboxList) {
          this.orderHdrInboxList = orderHdrInboxList;
     }

     public String getStatus(OrderHdr arg2) {
          // TODO Auto-generated method stub
          String status = "";

          try {

               OrderHdr orderHdrEntity = (OrderHdr) arg2;

               if (orderHdrEntity.getApprovedLevel() != null
                         && orderHdrEntity.getApprovedLevel().equals("-1")
                         && (orderHdrEntity.getIsClosed() != null && !orderHdrEntity
                                   .getIsClosed())
                         && (orderHdrEntity.getIsFreezed() != null && !orderHdrEntity
                                   .getIsFreezed())) {
                    status = getMessageFromPropertyFile("Rejected");
               }

               else if ((orderHdrEntity.getIsClosed() != null && orderHdrEntity
                         .getIsClosed())
                         && (orderHdrEntity.getIsFreezed() != null && !orderHdrEntity
                                   .getIsFreezed())) {
                    status = getMessageFromPropertyFile("Closed");
               } else if ((orderHdrEntity.getIsClosed() != null && !orderHdrEntity
                         .getIsClosed())
                         && (orderHdrEntity.getIsFreezed() != null && !orderHdrEntity
                                   .getIsFreezed())
                         && (orderHdrEntity.getApprovedLevel() != null && orderHdrEntity
                                   .getApprovedLevel().equals("0"))
                         && orderHdrEntity.getProcessInstanceId() != null) {
                    status = getMessageFromPropertyFile("Submitted");
               }

               else if ((orderHdrEntity.getIsClosed() != null && !orderHdrEntity
                         .getIsClosed())
                         && (orderHdrEntity.getIsFreezed() != null && !orderHdrEntity
                                   .getIsFreezed())
                         && (orderHdrEntity.getApprovedLevel() != null && orderHdrEntity
                                   .getApprovedLevel().equals("0"))) {
                    status = getMessageFromPropertyFile("Provisional");
               }

               else if ((orderHdrEntity.getIsClosed() != null && !orderHdrEntity
                         .getIsClosed())
                         && (orderHdrEntity.getIsFreezed() != null && !orderHdrEntity
                                   .getIsFreezed())
                         && orderHdrEntity.getApprovedLevel() == null) {
                    status = getMessageFromPropertyFile("Provisional");
               }

               else if ((orderHdrEntity.getIsClosed() != null && !orderHdrEntity
                         .getIsClosed())
                         && (orderHdrEntity.getIsFreezed() != null && !orderHdrEntity
                                   .getIsFreezed())
                         && (orderHdrEntity.getApprovedLevel() != null && orderHdrEntity
                                   .getApprovedLevel().equals("1"))) {
                    status = getMessageFromPropertyFile("Approved");
               }

               // else if (orderHdrEntity.getIsFreezed()!= null &&
               // orderHdrEntity.getIsFreezed()) {
               // status = "frozen";
               // }
               else {
                    status = getMessageFromPropertyFile("Provisional");
               }

          }

          catch (Exception e) {
               throw new ConverterException(e);
          }
          return status;
     }

     public String getSortField() {
          return sortField;
     }

     public boolean isSortAscending() {
          return sortAscending;
     }

     public void sortDataList(ActionEvent event) {
          em.clear();
          // System.out.println("sortDataList");
          String sortFieldAttribute = getAttribute(event, "sortField");

          // Get and set sort field and sort order.
          if (sortField != null && sortField.equals(sortFieldAttribute)) {
               sortAscending = !sortAscending;
          } else {
               sortField = sortFieldAttribute;
               sortAscending = true;
          }

          // Sort results.
          if (sortField != null) {
               Collections.sort(orderHdrInboxList, new DTOComparator(sortField,
                         sortAscending));
          }
     }

     private static String getAttribute(ActionEvent event, String name) {
          return (String) event.getComponent().getAttributes().get(name);
     }

     public List<MstDocumentTypes> getMstDocumentTypeslist() {
          if (mstDocumentTypeslist == null) {
               messageLogger.info("Loading the Master Document Types Details...");
               mstDocumentTypeslist = em.createQuery(
                         "from MstDocumentTypes m where m.isBackOfficeDocument=:isBackOfficeDocument"
                                   + " and  m.status =:status").setParameter(
                         "isBackOfficeDocument", true).setParameter("status", true)
                         .getResultList();
          }
          return mstDocumentTypeslist;
     }

     public int getPageIndex() {
          return pageIndex;
     }

     public void setPageIndex(int pageIndex) {
          this.pageIndex = pageIndex;
     }

}

I have an AJAX method that is being called when i change the Dropdown. Even the function is not getting called. I dont know where to begin or find out what the problem is.
I am returning an ArrayList to the calling function. This error is occurring only when we have an AJAX component... Is there something that i need to enable or some property that might be missing. This application works fine on Jboss 4.2.3 App server and we are trying to port this on to Websphere App server 7.0

I have followed instructions and was able to deploy the application on WAS 7.0 , but am ending up with this error throughout the app where we are using AJAX (which is almost the whole app)