CallAndIterate.xml

<?xml version="1.0" encoding="UTF-8"?>
<proxy xmlns="http://ws.apache.org/ns/synapse"
       name="IterateSample"
       startOnLoad="true"
       statistics="disable"
       trace="disable"
       transports="http,https">
   <target>
      <inSequence>
         <log level="custom">
            <property expression="$body//stocks/stock" name="The Stocks"/>
         </log>
         <iterate expression="$body//stocks/stock" id="stocks">
            <target>
               <sequence>
                  <log>
                     <property name="Iterating" value="====="/>
                  </log>
                  <call>
                     <endpoint>
                        <http uri-template="http://www.mocky.io/v2/5ebc10972e0000bf269f416e"/>
                     </endpoint>
                  </call>
               </sequence>
            </target>
         </iterate>
         <aggregate id="stocks">
            <completeCondition>
               <messageCount max="-1" min="-1"/>
            </completeCondition>
            <onComplete expression="$body/*[1]">
               <payloadFactory media-type="xml">
                  <format>
                     <Status>Completed</Status>
                  </format>
                  <args/>
               </payloadFactory>
               <respond/>
            </onComplete>
         </aggregate>
      </inSequence>
   </target>
   <description/>
</proxy>