---
title: Prepare a new Tool File to manage Digital Twin Instance(s)
slug: solutions/prepare-a-new-tool-file-to-manage-digital-twin-instances
docTags: 
createdAt: 2025-08-21T13:32:51.881Z
---

To manage Digital Twin Instance(s) with the Litmus Excel Add-ins with a new Tool file, you must prepare the Tool file first.

# Before You Begin

- You know the IPv4 address of your Litmus Edge device. 
- You [have an API Key defined](docId\:qZV_OaP7FN9tGhq9UTn_N) on the Litmus Edge Device you can use.

# Step 1: Navigate to Home Actions

Open a new Excel file with *Litmus Excel Add-ins *enabled. See [Step 4: Verify Litmus Excel Add-in Activation in Excel](docId\:GZDhBJ1xZZNDDThYOCuuu) to learn more.

Expand **Home Actions**.

::Image[]{src="https://api.archbee.com/api/optimize/SSUUxKZUk9bFTEPNn_6Zo/nz31SoF7h4a472dNJh5eA_image.png" size="80" width="1004" height="363" position="center" showCaption="false"}

Click on **New Configuration**.

::Image[]{src="https://api.archbee.com/api/optimize/SSUUxKZUk9bFTEPNn_6Zo/HxyUP9sPbRB16HK563y-L_image.png" size="80" width="525" height="251" position="center" showCaption="false"}

Click on **Digital Twin Instance Management Template**.

![](https://api.archbee.com/api/optimize/SSUUxKZUk9bFTEPNn_6Zo/RLYWIx9g5BxYlAX9GeAb7_image.png)

A new file will be created, based on the DT Instance Management Template, with a default name of "Litmus\_Configuration\_DTInstanceManagement\_\<User Name>\_\<Date>\_\<Time>.xlsm".
Example:*&#x20; Litmus\_Configuration\_DT*Instance*Management\_Jane Doe\_08122025\_132020.xlsm*
It is stored by default in your Documents Folder.

# Step 2: Add IP and API Key for one  Litmus Edge

The DT Instance Management Tool will inform the user if no Litmus Edge Device is defined.
Acknowledge the message through a click on the *OK* button.

::Image[]{src="https://api.archbee.com/api/optimize/SSUUxKZUk9bFTEPNn_6Zo/LA4OB7Qdw2qc94x_wpx5w_image.png" size="80" width="606" height="513" position="center" showCaption="false"}

Enter the following details for the Connection:

- **Connect To:** One LE.
- **Target IP**: The IPv4 address of your Litmus Edge.
- The tool will prompt the User for the API key

::Image[]{src="https://api.archbee.com/api/optimize/SSUUxKZUk9bFTEPNn_6Zo/FIfwdAym8QZXDB67sUzpE_image.png" size="80" width="727" height="543" position="center" showCaption="false"}

Provide the [API Key](docId\:yEbaCETwTk6biyhTq0SL9) from Litmus Edge. Press the ENTER key. And Click on the green Save button

::Image[]{src="https://images.archbee.com/SSUUxKZUk9bFTEPNn_6Zo/ozgETgypSA6W917ypoww2_image-2025-08-12-133928982.png?format=webp" size="80" width="628" height="410" position="center" showCaption="false"}

The tool will now verify if it can connect to the defined Litmus Edge.

# Troubleshooting

The system will attempt to establish a connection with the Litmus Edge. If successful, you will see the red banner disappear and the Icon next tot the IP address change.

::Image[]{src="https://api.archbee.com/api/optimize/SSUUxKZUk9bFTEPNn_6Zo/sqq_i-ohAsl0Qb3OByjr-_image.png" size="80" width="558" height="413" position="center" showCaption="false"}

If the connection fails:
Example: No API Key provided

::Image[]{src="https://api.archbee.com/api/optimize/SSUUxKZUk9bFTEPNn_6Zo/dbRZqvUI4dufB06cOZJuy_image.png" size="80" width="665" height="470" position="center" showCaption="false"}

You want to:

- Verify the IPv4 address
- Confirm the API Key

::Image[]{src="https://api.archbee.com/api/optimize/SSUUxKZUk9bFTEPNn_6Zo/_mFLcPjcdA11B3uCKA7sB_image.png" size="80" width="677" height="549" position="center" showCaption="false"}

- Confirm if all Services are in a running (green) state.

::Image[]{src="https://api.archbee.com/api/optimize/SSUUxKZUk9bFTEPNn_6Zo/mQk_jVDE6bHlpapRuzCwt_image.png" size="80" width="1622" height="836" position="center" showCaption="false"}

- Confirm if the Stats Service is not running correctly.

![](https://images.archbee.com/SSUUxKZUk9bFTEPNn_6Zo/wjAixztaQ8M_hv6Yu3S2k_image.png?format=webp)