The Reference field lets you link entries from the same or different content types. It enables structured relationships between content and allows you to reuse entries across your stack.
You can update the following properties of a Reference field at any time:
Creating references within the same content type is known as Self Referencing, while referencing other content type(s) is known as Include Referencing.
Let’s explore them in detail.
Self Referencing allows you to reference entries from the same content type.
For example, in an e-commerce application with content types such as Category, Brand, and Product, you may want to recommend related products. You can add a Reference field within the Product content type that references other Product entries.
To configure:

Content managers can then select related products when creating or editing entries.
Include Referencing allows you to reference entries from one or more different content types.
There are two approaches:
Allows referencing entries from one specific content type.
If you have News Article and Author content types, you can add a Reference field in News Article that references Author entries.
To configure:

Content managers can then select one or more authors while creating news articles.
Allows referencing entries from multiple content types.
If you have content types such as Clothes, Shoes, and Bags, and want to associate them with a Brand, you can:

Content managers can then select entries from all configured content types.
Note: You can add up to 50 content types in a single Reference field. Refer to the Limitations section for details.
The Reference field includes several features to help manage relationships effectively.
The View Reference Map feature visualizes relationships between entries.
When an entry references other entries, or is referenced by them, the View Reference Map option appears in the entry editor’s Information panel.
Selecting this option opens a modal displaying a visual map of relationships.

This feature helps you understand complex content structures at a glance.
You can create new entries directly from a Reference field without leaving the entry editor.
Note: The Create new entry option is available only if the Save In Progress Entry feature is enabled in your plan.
Use breadcrumbs within nested references to move between related entries easily. This is especially useful when managing complex content structures.
After selecting a reference:
Warning: Save the parent entry before navigating away to avoid losing unsaved changes.
If the field is configured as Multiple, you can:
When selecting entries:
Note: If a referenced child entry is deleted, only its UID and content type UID remain visible.
Permissions determine how users interact with referenced content types.
If a user does not have Read access to the referenced content type:
If a user has Read access but not Publish access:
The Reference field enables structured content relationships across your stack, allowing you to build reusable, connected content models. By linking entries within or across content types, you can create scalable architectures that support dynamic content delivery and efficient content management.