Merge pull request #98861 from akkumari-ms/main

Updated autoscale custom metrics

Author: Jak-MS

articles/azure-monitor/autoscale/autoscale-custom-metric.md

@@ -18,6 +18,9 @@ This article describes how to set up autoscale for a web app by using a custom m
 
 Autoscale allows you to add and remove resources to handle increases and decreases in load. In this article, we'll show you how to set up autoscale for a web app by using one of the Application Insights metrics to scale the web app in and out.
 
+> [!NOTE]
+> Autoscaling on custom metrics in Application Insights is supported only for metrics published to **Standard** and **Azure.ApplicationInsights** namespaces. If any other namespaces are used for custom metrics in Application Insights, it will return **Unsupported Metric** error.
+
 Azure Monitor autoscale applies to:
 
 + [Azure Virtual Machine Scale Sets](https://azure.microsoft.com/services/virtual-machine-scale-sets/)
@@ -153,4 +156,4 @@ To learn more about autoscale, see the following articles:
 - [Overview of autoscale](./autoscale-overview.md)
 - [Azure Monitor autoscale common metrics](./autoscale-common-metrics.md)
 - [Best practices for Azure Monitor autoscale](./autoscale-best-practices.md)
-- [Autoscale REST API](/rest/api/monitor/autoscalesettings)
+- [Autoscale REST API](/rest/api/monitor/autoscalesettings)