---
title: Prepare a new Tool File to manage Digital Twin Models on multiple Litmus Edge
slug: solutions/prepare-a-new-tool-file-to-manage-digital-twin-models-on-multiple-litmus-edge
docTags: 
createdAt: 2025-08-21T13:33:20.232Z
---

To manage Digital Twin Models on multiple Litmus Edge 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 Model Management Template**.

![](https://api.archbee.com/api/optimize/SSUUxKZUk9bFTEPNn_6Zo/c4xZHFkZ8l8B_2f3R2P4T_image.png)

A new file will be created, based on the DT Model Management Template, with a default name of "Litmus\_Configuration\_DTModelManagement\_\<User Name>\_\<Date>\_\<Time>.xlsm".
Example:*&#x20; Litmus\_Configuration\_DTModelManagement\_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 Model 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/1KFUv6XJrlLjyeoIzlPxC_image.png" size="80" width="614" height="518" position="center" showCaption="false"}

Select for **Connect To** the Multiple LE option. Which will show the **Target Litmus Edge IP** column.

::Image[]{src="https://api.archbee.com/api/optimize/SSUUxKZUk9bFTEPNn_6Zo/PzinI1x-is8IDjD0x_oYZ_image.png" size="80" width="506" height="343" position="center" showCaption="false"}

Provide the IPv4 of **one** of the Litmus Edge you want to work on in the first row (Row 5). And press the **Yes** button.

::Image[]{src="https://api.archbee.com/api/optimize/SSUUxKZUk9bFTEPNn_6Zo/6WaDI5ssRqwM2Ksh97Laz_image.png" size="80" width="660" height="398" 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.

:::hint{type="info"}
**Notes**:

It is **not** necessary to add all the IPv4 addresses for every Litmus Edge you want to work on.

Their IPv4 addresses will be added as needed.
:::

# Troubleshooting

The system will attempt to establish a connection with the Litmus Edge. If successful, you will see the red banner disappear and the cell change to green.

::Image[]{src="https://api.archbee.com/api/optimize/SSUUxKZUk9bFTEPNn_6Zo/E_QITaEJLN00oxK4emReL_image.png" size="80" width="700" height="421" position="center" showCaption="false"}

If the connection fails:
Example: No API Key provided.

::Image[]{src="https://api.archbee.com/api/optimize/SSUUxKZUk9bFTEPNn_6Zo/R63UHOzO3na6Df7iMirpF_image.png" size="80" width="471" height="265" 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/8c0-SD_e8OhkTiafn0zl3_image.png" size="80" width="723" height="541" 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)