> ## 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.

# Add a Non-Customer Entity Category

The Non-Customer Entity category stores the user's data that is not directly linked to a specific individual but instead provides insights into the entity that the customer is associated with. For example, `product catalogues`, `order data`, `feed data`, `campaign data`, `account data` and so on.

Perform the following steps to add a Non-Customer Entity 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>
    Choose one of the following as the **Data Type**:

    * String
    * Integer
    * Double
    * Timestamp
    * List of String/Integer/Double

    <Note>
      **Note:**

      You can only map a source field of the data type `List` to a catalogue field of the data type `List`. For example, if the source field is of type `List of String`, then you can map it to only a `List of String` in the catalogue.
    </Note>
  </Step>

  <Step>
    Choose **Non-customer Entity** as the **Category**.
  </Step>

  <Step>
    Save the changes.

    <Frame>
      <img src="https://mintcdn.com/zeotap/VC7TCWdAQcEWP1YP/articles/unify-customer/Storage/unify-customer/project-collect-customer/adding-a-non-customer-entity-category/adding-a-non-customer-entity-category-2023-07-27.png?fit=max&auto=format&n=VC7TCWdAQcEWP1YP&q=85&s=f099ae8a9f93fcfe1eac5f52ad4539b0" alt="" width="3312" height="1708" data-path="articles/unify-customer/Storage/unify-customer/project-collect-customer/adding-a-non-customer-entity-category/adding-a-non-customer-entity-category-2023-07-27.png" />
    </Frame>

    <Note>
      **Note:**

      When Non-Customer Entity (NCE) data is combined with user data using the Join ID, the attribute name in the\
      activation systems such as Audiences or Symphony is displayed in the following format:   `<Join key name>_feed<source ID>_<NCE field name>`

      For example, if the Join key name is `productid`, the NCE Source ID is `345` and the NCE field is `productcolor`, then the attribute name is displayed as shown below:\
      `productid_feed_345_productcolor`.

      To know how to create a Non-Customer Entity Data source, refer [here](/articles/unify-customer/non-customer-entity-data).
    </Note>
  </Step>
</Steps>