Privacy Sandbox enrollment provides a mechanism to verify the entities that call these APIs and gather developer-specific data needed to properly configure and deploy the Privacy Sandbox APIs. To access the Privacy Sandbox APIs on Chrome and Android, including Attribution Reporting, Protected Audience, Topics, Fenced Frames, and Shared Storage, developers must be enrolled with the Privacy Sandbox.
Get started with Privacy Sandbox enrollment at goo.gle/privacy-sandbox-enroll.