No existing transaction found for transaction marked with propagation 'mandatory'

[eros]

environment:
Spring 2.5.2
SWF 1.0.5
DWR 2.0.5

Error Message:

org.springframework.transaction.IllegalTransaction StateException: No existing transaction found for transaction marked with propagation 'mandatory'

Configurations:

web.xml

	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value><![CDATA[
			classpath:applicationContext.xml,
			classpath:applicationContext-service.xml
		 ]]></param-value>
	</context-param>
	<listener>
		<listener-class>
			jp.co.udom.rosenpro.web.util.LogbackConfigListener
		</listener-class>
	</listener>	
	<listener>
		<listener-class>
			org.springframework.web.context.ContextLoaderListener
		</listener-class>
	</listener>
	<servlet>
	<servlet-name>route-web</servlet-name>
	<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
	<init-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>
			classpath:applicationContext-servlet.xml
			classpath:applicationContext-webflow.xml
			classpath:applicationContext-tiles.xml
		</param-value>
	</init-param>
	<load-on-startup>1</load-on-startup>
	</servlet>

	<servlet-mapping>
		<servlet-name>route-web</servlet-name>
		<url-pattern>/pro/*</url-pattern>
	</servlet-mapping>

	<!-- DWR 2.0.5 Integration -->
	<servlet>
		<servlet-name>dwr</servlet-name>
		<servlet-class>org.directwebremoting.spring.DwrSpringServlet</servlet-class>
		
		<!-- Turn debug to false in production-->
		<init-param>
			<param-name>debug</param-name>
			<param-value>true</param-value>
		</init-param>
	</servlet>
	<servlet-mapping>
		<servlet-name>dwr</servlet-name>
		<url-pattern>/dwr/*</url-pattern>
	</servlet-mapping>

applicationContext-service.xml

	<bean id="routeService" parent="serviceBase"
		class="com.coy.route.service.impl.RouteServiceImpl">
		<property name="routeBl" ref="routeBl" />
		<property name="searchConditionSaveBl" ref="searchConditionSaveBl" />
		<dwr:remote javascript="dwrRouteService">
        	<dwr:include method="execFindLatestRouteNumber" />
        </dwr:remote>
	</bean>

applicationContext-servlet.xml

    <bean class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
        <property name="alwaysUseFullPath" value="true"/>
        <property name="mappings">
            <value>
                <![CDATA[
                /pro/k/*=flowController
                /pro/flow/**-flow=flowController
                /engine.js=dwrController
				/util.js=dwrController
				/call/**=dwrController
				/dwr/**"=dwrController
				/interface/**=dwrController
                ]]>
            </value>
        </property>
    </bean>
    <bean id="viewResolver"
        class="org.springframework.web.servlet.view.UrlBasedViewResolver">
       <property name="viewClass"
            value="org.springframework.web.servlet.view.tiles2.TilesView">
        </property>
    </bean>

    <dwr:configuration>
    </dwr:configuration>
    
	<dwr:controller id="dwrController" debug="true" />

I am trying to integrate the DWR 2.0 but it fails.