An adjudication-procedure concept defining notices, requests, and mechanisms used during immigration case processing. It governs communication, deadlines, supplementation of the record, and avenues to challenge or revisit an administrative outcome. It does not guarantee approval and does not cure substantive ineligibility for the requested benefit or relief. It materially affects timing, completeness of the record, and the availability of administrative review. The concept is generally stable, though procedures and notice formats may change over time.