Merge pull request #275647 from lgayhardt/patch-260

Tracing: Note about West US 3 not supported

Author: v-dirichards

articles/ai-studio/how-to/develop/trace-local-sdk.md

@@ -68,6 +68,9 @@ Next, execute the following command to set the trace destination. Replace `<your
 pf config set trace.destination=azureml://subscriptions/<your_subscription_id>/resourcegroups/<your_resourcegroup_name>/providers/Microsoft.MachineLearningServices/workspaces/<your_studio_project_name>
 ```
 
+> [!NOTE]
+> The West US 3 (`westus3`) region does not support tracing.
+
 ### Collections
 
 A **collection** is a group of associated traces. In [AI Studio](https://ai.azure.com), these collections along with their internal traces are managed and stored in the **Tracing** module under the **Collections** tab.
@@ -170,4 +173,4 @@ If you want to share the trace with others who has the project permission, you c
 ## Related content
 
 - [Get started building a chat app using the prompt flow SDK](../../quickstarts/get-started-code.md)
-- [Work with projects in VS Code](vscode.md)
+- [Work with projects in VS Code](vscode.md)