Implement Iterate in parrelel execution with aggregate in a single sequence WSO2 ESB5 - wso2

Question

What I want to do is implement Iterate in parrelel execution with aggregate in a single sequence (without using call/send medior within it).
When I implement the Aggregate in the out sequence this works fine as mentioned below.
<inSequence>
<property name="it_count" scope="operation" type="STRING" value="0"/>
<iterate expression="//symbols/symbol">
<target>
<sequence>
<log level="custom">
<property name="ITERATING..." expression="$body"/>
</log>
<enrich>
<source type="inline">
<out xmlns="">TEST</out>
</source>
<target xpath="//symbol"/>
</enrich>
<log level="custom">
<property name="ITERATING..." expression="$body"/>
</log>
<loopback/>
</sequence>
</target>
</iterate>
</inSequence>
<outSequence>
<property name="response" scope="default">
<response xmlns=""/>
</property>
<aggregate>
<completeCondition>
<messageCount max="-1" min="-1"/>
</completeCondition>
<onComplete enclosingElementProperty="response" expression="//out">
<log level="custom">
<property name="AGGREGATING..." expression="$body"/>
</log>
</onComplete>
</aggregate>
<send/>
</outSequence>
But I'm facing a difficulty of doing it in the same seqence as like below. It doesn't come even to the Aggegate log. I tried various ways but still faced.
<inSequence>
<property name="it_count" scope="operation" type="STRING" value="0"/>
<iterate expression="//symbols/symbol">
<target>
<sequence>
<log level="custom">
<property name="ITERATING..." expression="$body"/>
</log>
<enrich>
<source type="inline">
<out xmlns="">TEST</out>
</source>
<target xpath="//symbol"/>
</enrich>
<log level="custom">
<property name="ITERATING..." expression="$body"/>
</log>
<loopback/>
</sequence>
</target>
</iterate>
<property name="response" scope="default">
<response xmlns=""/>
</property>
<aggregate>
<completeCondition>
<messageCount max="-1" min="-1"/>
</completeCondition>
<onComplete enclosingElementProperty="response" expression="//symbol">
<log level="custom">
<property name="AGGREGATING..." expression="$body"/>
</log>
</onComplete>
</aggregate>
<respond/>
</inSequence>
<outSequence/>
I know if I use Call/Send mediator within the Iterate I can do this in one sequence. But in my case I don't use one in there.
Can anyone give a clue for this.

Answer 1

In the 2nd case, add attribute continueParent="true" on iterate mediator (you don't want this mediation to stop after iterate mediator) and remove loopback mediator (you don't want to send anything to an out sequence)