> ## Documentation Index
> Fetch the complete documentation index at: https://docs.siftstack.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Step 2: Create a Metadata key

## Overview

In this step, you will create a string Metadata key called `fl_data_source` to help identify the Run from the LEO dataset in Tutorial 1. The key name represents the attribute you want to track, in this case the source of the data. You will also assign a predefined value to the key, which will appear as a selectable option when the key is applied to a resource.

## Create a Metadata key

1. Click your profile icon, which shows the first initial of your account name.
2. Select **Manage**, then open **Metadata** from the navigation menu.
3. Click **+ Create Metadata key**.
4. In the **Name** box, enter:
   ```
       fl_data_source
   ```
5. Replace `fl` (in `fl_data_source`) with your initials.
6. Click **Create**.
   * Next, let's assign a predefined value to the key.
7. In the **Metadata key name** box, enter the name of the created Metadata key.
8. In the **Metadata keys** table, click <Icon icon="ellipsis-vertical" /> **Options**, then select **View values**.
9. In the **Enter string value** box, enter the following:
   ```
       fl_option_1_data_source
   ```
10. Replace `fl` (in `fl_option_1_data_source`) with your initials.
11. Click **Add value**.
12. Click **Close**.