Update tumbling-window-trigger-dependency.md

-------
cc: @chez-charlie

Author: jonburchel

articles/data-factory/tumbling-window-trigger-dependency.md

@@ -8,7 +8,7 @@ ms.service: data-factory
 ms.subservice: orchestration
 ms.topic: conceptual
 ms.custom: synapse
-ms.date: 09/22/2022
+ms.date: 09/27/2022
 ---
 
 # Create a tumbling window trigger dependency
@@ -162,6 +162,9 @@ You can see the status of the dependencies, and windows for each dependent trigg
 
 A tumbling window trigger will wait on dependencies for _seven days_ before timing out. After seven days, the trigger run will fail.
 
+> [!NOTE]
+> A tumbling window trigger cannot be cancelled while it is in the **Waiting on dependency** state. The dependent activity must finish before the tumbling window trigger can be cancelled. This is by design to ensure dependent activities can complete once started, and helps reduce the likelihood of unexpected results.
+
 For a more visual to view the trigger dependency schedule, select the Gantt view.
 
 :::image type="content" source="media/tumbling-window-trigger-dependency/tumbling-window-dependency-09.png" alt-text="Monitor dependencies gantt chart":::