diff --git a/plugin/src/main/java/org/opensearch/ml/action/models/DeleteModelTransportAction.java b/plugin/src/main/java/org/opensearch/ml/action/models/DeleteModelTransportAction.java
index cb31fc9a87..e79ecee40b 100644
--- a/plugin/src/main/java/org/opensearch/ml/action/models/DeleteModelTransportAction.java
+++ b/plugin/src/main/java/org/opensearch/ml/action/models/DeleteModelTransportAction.java
@@ -352,6 +352,7 @@ private void checkSearchPipelineBeforeDeleteModel(String modelId, ActionListener
     }
 
     private void checkDownstreamTaskBeforeDeleteModel(String modelId, Boolean isHidden, ActionListener<DeleteResponse> actionListener) {
+        // Now 3 is: 1. Agent 2. Search pipeline 3. ingest pipeline
         CountDownLatch countDownLatch = new CountDownLatch(3);
         AtomicBoolean noneBlocked = new AtomicBoolean(true);
         ConcurrentLinkedQueue<String> errorMessages = new ConcurrentLinkedQueue<>();