Added note on 'Check workspace linked storage' in LSA

Author: yanivlavi

articles/azure-monitor/alerts/alerts-log.md

@@ -81,6 +81,9 @@ You can also [create log alert rules using Azure Resource Manager templates](../
 
     :::image type="content" source="media/alerts-log/alerts-rule-details-tab.png" alt-text="Details tab.":::
 
+> [!NOTE]
+> If you, or your administrator assigned the Azure Policy **Azure Log Search Alerts over Log Analytics workspaces should use customer-managed keys**, you must select **Check workspace linked storage** option in **Advanced options**, or the rule creation will fail as it will not meet the policy requirements.
+
 1. In the **Tags** tab, set any required tags on the alert rule resource.
 
     :::image type="content" source="media/alerts-log/alerts-rule-tags-tab.png" alt-text="Tags tab.":::
@@ -152,4 +155,4 @@ On success for creation, 201 is returned. On success for update, 200 is returned
 * Learn about [log alerts](./alerts-unified-log.md).
 * Create log alerts using [Azure Resource Manager Templates](./alerts-log-create-templates.md).
 * Understand [webhook actions for log alerts](./alerts-log-webhook.md).
-* Learn more about [log queries](../logs/log-query-overview.md).
+* Learn more about [log queries](../logs/log-query-overview.md).