I am facing OAException Message Name: FND_VIEWOBJECT_NOT_FOUND

I extended(added 3 custom columns) Requisition lines view object. but after integration on EBS. it is giving me this message. I tried many methods and searched through internet and forums but didn't find any useful material or solution. help me in this regard if any body solved this. We are using R12.2.4.

Exception Details.

oracle.apps.fnd.framework.OAException: Message not found. Application: FND, Message Name: FND_VIEWOBJECT_NOT_FOUND. Tokens: VONAME = ReqLinesNotificationsVO; APPLICATION_MODULE = oracle.apps.icx.por.wf.server.ReqApprovalNotificationsAM; at oracle.apps.fnd.framework.webui.OAPageErrorHandler.prepareException(OAPageErrorHandler.java:1247) at oracle.apps.fnd.framework.webui.OAPageBean.preparePage(OAPageBean.java:2255) at oracle.apps.fnd.framework.webui.OAPageBean.preparePage(OAPageBean.java:567) at oracle.apps.fnd.framework.webui.OAPageBean.preparePage(OAPageBean.java:455) at _pages.__oa._jspService(__oa.java:233) at weblogic.servlet.jsp.JspBase.service(JspBase.java:34) at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227) at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125) at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:301) at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:184) at weblogic.servlet.internal.RequestDispatcherImpl.invokeServlet(RequestDispatcherImpl.java:526) at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:253) at weblogic.servlet.jsp.PageContextImpl.forward(PageContextImpl.java:159) at _pages.__oa._jspService(__oa.java:246) at weblogic.servlet.jsp.JspBase.service(JspBase.java:34) at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227) at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125) at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:301) at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:60) at oracle.apps.fnd.security.WLFilter.doFilter(WLFilter.java:213) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:60) at oracle.apps.jtf.cabo.interceptor.JTFWrapperFilter.doFilter(JTFWrapperFilter.java:141) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:60) at oracle.apps.jtf.base.session.ReleaseResFilter.doFilter(Unknown Source) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:60) at oracle.apps.fnd.security.AppsServletFilter.doFilter(AppsServletFilter.java:432) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:60) at oracle.security.jps.ee.http.JpsAbsFilter$1.run(JpsAbsFilter.java:119) at java.security.AccessController.doPrivileged(Native Method) at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:315) at oracle.security.jps.ee.util.JpsPlatformUtil.runJaasMode(JpsPlatformUtil.java:442) at oracle.security.jps.ee.http.JpsAbsFilter.runJaasMode(JpsAbsFilter.java:103) at oracle.security.jps.ee.http.JpsAbsFilter.doFilter(JpsAbsFilter.java:171) at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:71) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:60) at oracle.dms.servlet.DMSServletFilter.doFilter(DMSServletFilter.java:139) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:60) at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3739) at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3705) at