Coordinate downstream remediation so members are made whole: claims re-adjudication, pharmacy support, premium adjustments and refunds, subsidy and penalty corrections, prescription drug event corrections, materials and ID card reissuance, and member and provider notification. When a member's enrollment record is wrong — wrong plan, wrong county, wrong effective date, wrong subsidy status, or missing entirely — the correction is retroactive, and it touches enrollment, payment, claims, pharmacy, and premium billing simultaneously.