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/BirtExtractDataActionHandler.java
try
		{
			ServletOutputStream out = context.getResponse( ).getOutputStream( );
			getReportService( ).extractResultSet( docName, resultSetName,
					columns, filters, options, out );
		}
		catch ( ReportServiceException e )
		{
			throwAxisFault( e );
		}
		catch ( IOException e )
		{
			
			throwAxisFault( e );
		}
	}
	private void throwAxisFault( Exception e ) throws RemoteException
	{
		AxisFault fault = new AxisFault( );
		fault.setFaultCode( new QName(
				"BirtExtractDataActionHandler.execute( )" ) ); 
		fault.setFaultString( e.getLocalizedMessage( ) ); 
		throw fault;
	}
	protected IViewerReportService getReportService( )
	{
		return BirtReportServiceFactory.getReportService( );
	}
}