Java spring批处理配置元素不可访问

这是我的作业配置：

 <step id="indelToMorph" next="multiThreaded_createIndividualMorphs_master">
            <tasklet>
                <chunk reader="indelReader" processor="indelProcessor" writer="indelWriter" commit-interval="100"/>
            </tasklet>
        </step>

        <step id="multiThreaded_createIndividualMorphs_master" next="createMarkers"> 
            <partition step="multiThreaded_createIndividualMorphs"  partitioner="partitionMorphAdvancedHandler"> 
                        <handler grid-size="10" task-executor="taskAsyncExecutor"/> 
             </partition>
            <listeners>
                <listener ref="calculateIndividualMorphListener"/>
            </listeners>
        </step>

        <step id="multiThreaded_createIndividualMorphs">
            <tasklet ref="createIndividualMorphsAdvancedTasklet"/>
        </step>

        <step id="createMarkers">
            <tasklet ref="verifyTasklet"/>
        </step>

但它说：

Caused by: org.springframework.beans.factory.parsing.BeanDefinitionParsingException: Configuration problem: The element [multiThreaded_createIndividualMorphs] is unreachable

---

我缺少什么？

在作业流中，无法访问步骤

多线程\u createIndividualMorphs

，因为没有指向此步骤的

下一个
配置问题与该步骤的声明有关。为了在分区步骤中使用步骤，需要在作业外定义从属步骤：

<job>
</job>
<step id="multiThreaded_createIndividualMorphs" xmlns="http://www.springframework.org/schema/batch">
            <tasklet ref="createIndividualMorphsAdvancedTasklet"/>
     </step>



<job>
</job>
<step id="multiThreaded_createIndividualMorphs" xmlns="http://www.springframework.org/schema/batch">
            <tasklet ref="createIndividualMorphsAdvancedTasklet"/>
     </step>