2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/32805I present a summary of recent use of the Open Archives Initiative (OAI) registration and validation services for data-providers. The registration service has seen a steady stream of registrations since its launch in 2002, and there are now over 220 registered repositories. I examine the validation logs to produce a breakdown of reasons why repositories fail validation. This breakdown highlights some common problems and will be used to guide work to improve the validation service.Digital LibrariesH.3.7text