Merge branch 'tsi-improvements' of https://github.com/v-lakast/azure-docs-pr into tsi-improvements

Author: v-lakast

articles/digital-twins/how-to-integrate-time-series-insights.md

@@ -53,6 +53,9 @@ Before creating the event hubs, you'll first create an event hub namespace that
 az eventhubs namespace create --name <name-your-event-hubs-namespace> --resource-group <your-resource-group> -l <region>
 ```
 
+> [!TIP]
+> If you get an error stating `BadRequest: The specified service namespace is invalid.`, make sure the name you've chosen for your namespace meets the naming requirements described in this reference document: [Create Namespace](/rest/api/servicebus/create-namespace).
+
 You'll be using this event hubs namespace to hold the two event hubs that are needed for this article:
 
   1. **Twins hub** - Event hub to receive twin change events
@@ -161,7 +164,7 @@ In this section, you'll create an Azure function that will convert twin update e
 
 ### Step 1: Add a new function
 
-Inside your function app project created in the [prerequisites](#prerequisites) section, you'll create a new Azure function of type **Event Hub trigger** function to update device telemetry events to the Time Series Insights.
+Inside your function app project created in the [prerequisites](#prerequisites) section, create a new Azure function called *ProcessDTUpdatetoTSI.cs* to update device telemetry events to the Time Series Insights. The function type will be **Event Hub trigger**.
 
 :::image type="content" source="media/how-to-integrate-time-series-insights/create-event-hub-trigger-function.png" alt-text="Screenshot of Visual Studio to create a new Azure function of type event hub trigger.":::
 
@@ -172,7 +175,7 @@ Add the following packages to your project:
 * [Microsoft.Azure.WebJobs.Extensions.EventHubs](https://www.nuget.org/packages/Microsoft.Azure.WebJobs/)
 * [Microsoft.NET.Sdk.Functions](https://www.nuget.org/packages/Microsoft.NET.Sdk.Functions/)
 
-Rename the *Function1.cs* sample function that Visual Studio has generated to *ProcessDTUpdatetoTSI.cs*. Replace the code in the file with the following code:
+Replace the code in the *ProcessDTUpdatetoTSI.cs* file with the following code:
 
 :::code language="csharp" source="~/digital-twins-docs-samples/sdks/csharp/updateTSI.cs":::