Accelerate the Value of Data

Reltio ID overview

Learn how to generate and maintain a unique and durable identifier to track data across all your applications inside and outside the Reltio platform.

Take a sneak peek at Reltio ID - your unique, durable identifier.
Note: Reltio ID is an Early Access (EA) feature. To enable this feature, open a support ticket.

Are you a Data Steward or Business data analyst who is in charge of handling customer data across multiple disconnected analytical environments and distributed systems across your organization? Does your management team often have discussions on implementing a costly and time-consuming in-house solution to build an identifier that can be used to identify an entity uniquely across all these different systems?

If this sounds like you, perhaps you could use a universal identifier generated in Reltio for every unique entity. This identifier can be used to connect and tie the entity’s data spread across your distributed systems. It enables you to match and complete data across your applications, which ultimately leads to better data quality, accurate analytics reporting, and good business decisions.

Reltio ID generation enablement for an entity

You can choose the entity type for which you want to enable Reltio ID generation for an entity. Once enabled, Reltio uses the UUID standard v6 format to generate a unique identifier for every entity that is created for the selected entity type.

Every time a new entity is created - either on the UI, by using the entities API, or by using the data loader feature - a new Reltio ID is created except when an entity merges on the fly with another existing entity that already has a Reltio ID.

Important: The ReltioID attribute can only be generated for entities. It can’t be generated for relationships and interactions. Only one Reltio ID parameter can be selected for an entity type.

Reltio ID generation enablement for existing and cloned tenants

Any existing tenants aren’t automatically assigned Reltio IDs by enabling Reltio ID generation for an entity type in the tenant. To generate it for an existing tenant, run the generate Reltio ID task to generate Reltio IDs for entity types that have Reltio ID enabled. When a Profile or tenant is cloned, the corresponding Reltio IDs are also cloned in the process. To generate it for a cloned tenant, run the generate Reltio ID task to regenerate a unique value for cloned entities. For more information, see topic Search for entity by ReltioID.


Enjoy the following benefits of Reltio ID once it’s enabled:

  • Durable: Reltio ID is durable and unique for an entity across all environments and tenants that you have access to. This enables you to search across the environments and tenants using the Search by Reltio ID API.
    Note: The Entity ID can’t be used as a durable identifier since it changes every time data is loaded into a new environment.
  • High latency search: The search by Reltio ID API supports hyper performance. Get your search results quick as a wink.
  • Reuse: You can reuse the earlier generated ID or generate a new ID when you reload data into a tenant.

Custom UID

In addition to using a Reltio-generated unique Id, you can also choose any attribute from your entity as a Custom UID. The custom UID gives you the same benefits as the Reltio ID. For example, use the medical license number or Social Security number(SSN) as your custom UID.

Attention: You’re expected to maintain the uniqueness of your Custom UID. Two entities with the same custom UID will behave like two different records for the same source with the same crosswalk id and value, and the entity is replaced.
Read on to find out more about how to use Reltio ID: