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

1. On the Reltio app selector, navigate to and select Console > Data Modeler > Entity types.
2. Select the entity type for which you want to create the new nested attribute.
   
3. In the Attributes page, select Create New.
   
4. Change the default Simple to the Nested entity type.
   
5. Enter a suitable 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 will appear on the Attribute page, and on the View info panel.
6. Toggle on the following attribute properties if you want 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. In the Nested attributes section, select + ATTRIBUTES.
   
8. In the displayed Nested attributes section, define the child attributes for the nested attribute you are creating: Simple (default) or Nested.
   
9. After entering the details for each child attribute, select ADD.
10. Repeat the previous step until you've added all your child attributes.
11. Change the order of the child attributes by hovering over the child attributes and using the UP and DOWN arrow keys.
    Select the pencil or trash can icons to respectively edit or delete a child attribute.
    
12. 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.
    
13. Select Save to complete the Nested attribute creation process.