diff --git a/acquia_contenthub.services.yml b/acquia_contenthub.services.yml
index f27345f..635ad2d 100644
--- a/acquia_contenthub.services.yml
+++ b/acquia_contenthub.services.yml
@@ -137,6 +137,11 @@ services:
     tags:
       - { name: event_subscriber }
 
+  entity.config_id.cdf.attribute:
+    class: Drupal\acquia_contenthub\EventSubscriber\CdfAttributes\ConfigEntityIdAttribute
+    tags:
+      - { name: event_subscriber }
+
   entity_id_and_revision.field.cdf.serializer:
     class: Drupal\acquia_contenthub\EventSubscriber\SerializeContentField\RemoveIdAndRevisionFieldSerialization
     tags:
diff --git a/src/EventSubscriber/CdfAttributes/ConfigEntityIdAttribute.php b/src/EventSubscriber/CdfAttributes/ConfigEntityIdAttribute.php
new file mode 100644
index 0000000..949a68b
--- /dev/null
+++ b/src/EventSubscriber/CdfAttributes/ConfigEntityIdAttribute.php
@@ -0,0 +1,36 @@
+<?php
+
+namespace Drupal\acquia_contenthub\EventSubscriber\CdfAttributes;
+
+use Acquia\ContentHubClient\CDFAttribute;
+use Drupal\acquia_contenthub\AcquiaContentHubEvents;
+use Drupal\acquia_contenthub\Event\CdfAttributesEvent;
+use Drupal\Core\Config\Entity\ConfigEntityInterface;
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+
+/**
+ * Adds the entity ID to config entity CDFs.
+ */
+class ConfigEntityIdAttribute implements EventSubscriberInterface {
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function getSubscribedEvents() {
+    $events = [];
+    $events[AcquiaContentHubEvents::POPULATE_CDF_ATTRIBUTES][] = ['onPopulateAttributes', 100];
+    return $events;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function onPopulateAttributes(CdfAttributesEvent $event) {
+    $entity = $event->getEntity();
+    if ($entity instanceof ConfigEntityInterface) {
+      $cdf = $event->getCdf();
+      $cdf->addAttribute('config_entity_id',CDFAttribute::TYPE_STRING, $entity->id());
+    }
+  }
+
+}