Merge pull request #103985 from tfitzmac/0211names

add portal dashboard name

Author: PRMerger16

articles/azure-resource-manager/management/resource-name-rules.md

@@ -2,7 +2,7 @@
 title: Resource naming restrictions
 description: Shows the rules and restrictions for naming Azure resources.
 ms.topic: conceptual
-ms.date: 01/16/2020
+ms.date: 02/11/2020
 ---
 
 # Naming rules and restrictions for Azure resources
@@ -523,6 +523,13 @@ In the following tables, the term alphanumeric refers to:
 > | clusters | resource group | 4-63 | Alphanumerics and hyphens.<br><br>Start and end with alphanumeric. |
 > | workspaces | resource group | 4-63 | Alphanumerics and hyphens.<br><br>Start and end with alphanumeric. |
 
+## Microsoft.Portal
+
+> [!div class="mx-tableFixed"]
+> | Entity | Scope | Length | Valid Characters |
+> | --- | --- | --- | --- |
+> | dashboards | resource group | 3-160 | Alphanumerics and hyphens.<br><br>To use restricted characters, add a tag named **hidden-title** with the dashboard name you want to use. The portal displays that name when showing the dashboard. |
+
 ## Microsoft.PowerBI
 
 > [!div class="mx-tableFixed"]