Learn how to create a nested attribute for an entity type.

1. From the Reltio app selector, navigate to and select Console > Data Modeler > Entity types.
2. Select the Entity type where you want to create a new Nested attribute.
3. Select Edit and then Create New.
   
4. Change the default Simple to the Nested entity type.
   
5. Enter a Name, Display name, and fill in the Data Label Pattern. Optionally, define a Description.
   We use the Data Label Pattern to build your attribute value label. For more information, see topic Attributes Configuration.
   Data Label Pattern {LastName},{FirstName},{MiddleInitial} will appear as: "Doe, John M".
   The optional Description displays on the Attribute tab, and on the View info panel.
6. Select the following attribute properties to enable them:
   1. Hidden: to hide the attribute from the Reltio Hub and API.
   2. Searchable: to display the attribute on the Advanced Search.
   3. Faceted: to display the attribute on the Faceted Search.
   4. Required: to make it mandatory to enter a value for the attribute.
7. Select ADD & EXIT.
   
8. In the Attributes section, Add child attribute for the Nested attribute you are creating: Simple (default) or Nested.
   
9. If you want to continue adding child attributes, select ADD ANOTHER until you've added all your child attributes.
10. After entering the details for each child attribute, select ADD & EXIT.
11. Optionally, define Match field (matchFieldURIs) and define Key attribute (keyAttributeURIs) parameters. For both Exact, Exact or null, and Exact or all null options are available.
    If you want to want to know more about these optional parameters, see topic Attributes configuration.
12. Select Save to complete the Nested attribute creation process.