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The HRP process is driven by OCHA, with contributions from cluster coordinators. In protracted emergencies, it is usually done on a yearly basis, in October, after the Humanitarian Needs Overview (HNO). HRPs are usually updated 6 months after their publication, with the release of a revised HRP. In sudden onset emergencies, it can be replaced or complemented by a Flash Appeal, following a specific emergency scale-up activation timeline.
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