Which property serves as the unique identifier of a DEC contact?

The unique identifier for a DEC (Digital Experience Cloud) contact within Sitefinity is the contact_id property. This property is specifically designated to serve as the unique reference for each contact, ensuring that every individual can be accurately identified and managed within the system.

In Sitefinity, proper management and tracking of contacts are essential for functionalities like personalized communication and data analysis. The contact_id ensures that each record is distinct, preventing any data conflicts and maintaining the integrity of contact information.

Other properties mentioned, such as identifier, uniqueId, and subject, do not fulfill the specific role of a unique identifier for DEC contacts. While these terms might represent various attributes or fields associated with a contact or system entity, they do not serve the core function of uniquely identifying a DEC contact within the Sitefinity architecture. Understanding the significance of contact_id helps in navigating the platform effectively and leveraging its capabilities in managing user interactions.