upds to ms.date and to emphasize supported regions

Author: cwatson-cat

articles/iot-hub/iot-hub-device-registry-setup.md

@@ -7,7 +7,7 @@ ms.author: cwatson
 ms.service: azure-iot-hub
 services: iot-hub
 ms.topic: how-to
-ms.date: 12/03/2025
+ms.date: 01/27/2026
 zone_pivot_groups: iot-hub-deployment-methods
 #Customer intent: As a developer new to IoT, I want to understand what Azure Device Registry is and how it can help me manage my IoT devices.
 ---

includes/iot-hub-device-registry-azure-cli.md

@@ -5,7 +5,7 @@ author: cwatson-cat
 ms.author: cwatson
 ms.service: azure-iot-hub
 ms.topic: include
-ms.date: 12/19/2025
+ms.date: 01/27/2026
 ---
 
 ## Additional prerequisites for Azure CLI

includes/iot-hub-device-registry-portal.md

@@ -6,14 +6,14 @@ ms.author: cwatson
 ms.service: azure-iot-hub
 ms.topic: include
 ai-usage: ai-assisted
-ms.date: 01/07/2026
+ms.date: 01/26/2026
 ---
 
 ## Additional prerequisites for Azure portal
 
 Before you begin, make sure you have:
 
-- An Azure resource group to organize your IoT hub and related resources. For more information, see [Create a resource group](/azure/azure-resource-manager/management/manage-resource-groups-portal).
+- An Azure resource group to organize your IoT hub and related resources. Create the resource group and resources in a [supported region](..\articles\iot-hub\iot-hub-what-is-new.md#supported-regions). For more information, see [Create a resource group](/azure/azure-resource-manager/management/manage-resource-groups-portal).
 - Assigned the [Contributor](/azure/role-based-access-control/built-in-roles/privileged#contributor) role to the **Azure IoT Hub** service at the resource group level. When you select members during the role assignment, search for and select **Azure IoT Hub** from the list of service principals. For more information, see [Assign Azure roles using the Azure portal](/azure/role-based-access-control/role-assignments-portal).
 
 ## Overview