Update object REST API access configuration instructions

Added instructions for registering the object REST API feature and checking its status.

Author: netapp-manishc

articles/azure-netapp-files/object-rest-api-access-configure.md

@@ -15,9 +15,26 @@ Azure NetApp Files supports access to objects with the [object REST API](object-
 
 This article describes how to configure object REST API access and walks you through the two supported certificate workflows. Choose the workflow that best matches your security and operational requirements.
 
-## Register the feature 
+## Register the feature
 
-The object REST API feature in Azure NetApp Files is currently in preview. You must submit a [waitlist request](https://aka.ms/ANF-object-REST-API-signup) to use this feature. Activation takes approximately one week, and you receive an email notification once the enrollment is complete. 
+You need to register the feature before using it for the first time. After registration, the feature is enabled and works in the background. 
+
+1. Register the feature: 
+
+    ```azurepowershell-interactive
+    Register-AzProviderFeature -ProviderNamespace Microsoft.NetApp -FeatureName ANFEnableObjectRESTAPI 
+    ```
+
+2. Check the status of the feature registration: 
+
+    > [!NOTE]
+    > The **RegistrationState** may be in the `Registering` state for up to 60 minutes before changing to`Registered`. Wait until the status is **Registered** before continuing.
+
+    ```azurepowershell-interactive
+    Get-AzProviderFeature -ProviderNamespace Microsoft.NetApp -FeatureName ANFEnableObjectRESTAPI 
+    ```
+
+You can also use [Azure CLI commands](/cli/azure/feature) `az feature register` and `az feature show` to register the feature and display the registration status.
 
 ## Create the self-signed certificate