#29528: Fix for communication.xml Handlers merging processs.

Author: engcom-Foxtrot

app/etc/di.xml

@@ -228,6 +228,17 @@
         </arguments>
     </type>
     <preference for="Magento\AsynchronousOperations\Model\ConfigInterface" type="Magento\WebapiAsync\Model\Config\Proxy" />
+    <virtualType name="Magento\Framework\Communication\Config\Reader\XmlReader" type="Magento\Framework\Config\Reader\Filesystem">
+        <arguments>
+            <argument name="converter" xsi:type="object">Magento\Framework\Communication\Config\Reader\XmlReader\Converter</argument>
+            <argument name="schemaLocator" xsi:type="object">Magento\Framework\Communication\Config\Reader\XmlReader\SchemaLocator</argument>
+            <argument name="fileName" xsi:type="string">communication.xml</argument>
+            <argument name="idAttributes" xsi:type="array">
+                <item name="/config/topic" xsi:type="string">name</item>
+                <item name="/config/topic/handler" xsi:type="string">name</item>
+            </argument>
+        </arguments>
+    </virtualType>
     <type name="Magento\Framework\Communication\Config\CompositeReader">
         <arguments>
             <argument name="readers" xsi:type="array">