Merge pull request #250945 from amerjusupovic/ajusupovic/use-snapshot-fixes

Add note for composition type requirement with snapshots

Author: prmerger-automator[bot]

articles/azure-app-configuration/howto-create-snapshots.md

@@ -94,7 +94,7 @@ If you have an application using Azure App Configuration, you can update it with
 
 ### [.NET](#tab/dotnet)
 
-Edit the call to the `AddAzureAppConfiguration` method, which is often found in the `program.cs` file of your application. If you don't have an application, you can reference any of the .NET quickstart guides, like [creating an ASP.NET core app with Azure App Configuration](./quickstart-aspnet-core-app.md).
+Edit the call to the `AddAzureAppConfiguration` method, which is often found in the `Program.cs` file of your application. If you don't have an application, you can reference any of the .NET quickstart guides, like [creating an ASP.NET core app with Azure App Configuration](./quickstart-aspnet-core-app.md).
 
 **Add snapshots to your configuration**
 
@@ -144,6 +144,9 @@ spring:
 
 ---
 
+> [!NOTE]
+> Only snapshots created with composition type `Key` can be loaded using the code samples shown above.
+
 ## Manage active snapshots
 
 The page under **Operations** > **Snapshots (preview)** displays two tabs: **Active snapshots** and **Archived snapshots**. Select **Active snapshots** to view the list of all active snapshots in an App Configuration store.