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

# Adding an ID Category

The ID category stores user's attributes like user id, account id and so on. Perform the following steps to add an ID category:

<Steps>
  <Step>
    Enter a Catalogue Field. As you type, suggestions based on the existing Catalogue Fields appear. You can choose a suggested Catalogue Field or click **+Add Catalogue Field** to add a new field.
  </Step>

  <Step>
    Map the Catalogue Field to its corresponding Source Field. Same as the above behaviour, you can choose a suggested Source Field or click **+Add a new Source Field** to add a new field.
  </Step>

  <Step>
    Enter a description for easy identification.
  </Step>

  <Step>
    You can choose **String** or **Integer** as the **Data Type**.
  </Step>

  <Step>
    Choose **ID** as the **Category**.
  </Step>

  <Step>
    For **Is this PII data?**, choose **Yes** or **No**.

    * When set to Yes, this field contains sensitive PII information of the user.
    * When set to No, this field does not contain sensitive PII information of the user.
  </Step>

  <Step>
    As per advanced settings, define the following options:

    1. Under advanced settings, a Group Name appears by default. You can choose a value from the drop-down menu or click **+Add a new group** to add a new group name.
    2. Define the **TTL** for the ID. **Forever** is the default value. You can choose the number of **Days** for TTL as per your requirement. This is used to determine how long the ID can be retained based on the TTL value. For more information about TTL and how to configure it, refer [here](/articles/unify-customer/time-to-live).
    3. **Total Number of IDs** determines the number of value to be stored against this **Id** attribute. Choose the appropriate number.
  </Step>

  <Step>
    Save the changes.

    <Frame>
      <img src="https://mintcdn.com/zeotap/htBST1bc1LEJ85Nd/articles/unify-customer/Storage/unify-customer/unify/id_cat.png?fit=max&auto=format&n=htBST1bc1LEJ85Nd&q=85&s=24d26b4e07251947b170a83cde6659fc" alt="" width="3554" height="1998" data-path="articles/unify-customer/Storage/unify-customer/unify/id_cat.png" />
    </Frame>
  </Step>
</Steps>