Bug 132914 "Invalid page number" error message is hard coded.
"Invalid page number" error message is hard coded in DocumentProcessor.java. This must be externalized into *.properties file. If there are other hard coded error messages, please also externalize.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/service/actionhandler/AbstractQueryExportActionHandler.java
{
	/**
	 * Abstract method.
	 * 
	 * @param resultSets
	 */
	protected abstract void handleUpdate( ResultSets resultSets );
	/**
	 * Constructor.
	 * 
	 * @param context
	 * @param operation
	 * @param response
	 */
	public AbstractQueryExportActionHandler( IContext context,
			Operation operation, GetUpdatedObjectsResponse response )
	{
		super( context, operation, response );
	}
	/**
	 * Action handler entry point.
	 * 
	 * @return
	 */
	protected void __execute( ) throws RemoteException
	{
		BaseAttributeBean attrBean = ( BaseAttributeBean ) context.getBean( );
		String docName = attrBean.getReportDocumentName( );
		List exportedResultSets;
		try