note

Author: spelluru

articles/event-hubs/use-blob-storage-checkpoint-store-azure-stack-hub.md

@@ -20,12 +20,16 @@ If you're using Azure Blob Storage as the checkpoint store in an environment tha
 - [JavaScript](https://github.com/Azure/azure-sdk-for-js/blob/master/sdk/eventhub/eventhubs-checkpointstore-blob/samples/receiveEventsWithDownleveledStorage.js) or  [TypeScript](https://github.com/Azure/azure-sdk-for-js/blob/master/sdk/eventhub/eventhubs-checkpointstore-blob/samples/receiveEventsWithDownleveledStorage.ts), 
 - Python - [Synchronous](https://github.com/Azure/azure-sdk-for-python/blob/master/sdk/eventhub/azure-eventhub-checkpointstoreblob/samples/event_processor_blob_storage_example_with_storage_api_version.py), [Asynchronous](https://github.com/Azure/azure-sdk-for-python/blob/master/sdk/eventhub/azure-eventhub-checkpointstoreblob-aio/samples/event_processor_blob_storage_example_with_storage_api_version.py)
 
+> [!NOTE]
+> Event Hubs on Azure Stack Hub is currently in preview. 
+
 If you run Event Hubs receiver that uses Blob Storage as the checkpoint store without targeting the version that Azure Stack Hub supports, you'll receive the following error message:
 
 ```bash
 The value for one of the HTTP headers is not in the correct format
 ```
 
+
 ## Sample error message in Python
 For Python, an error of `azure.core.exceptions.HttpResponseError` is passed to the error handler `on_error(partition_context, error)` of `EventHubConsumerClient.receive()`. But, the method `receive()` doesn't raise an exception. `print(error)` will print the following exception information: