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The standard frequency for metadata harvesting is weekly. Once harvested, the records have to be indexed to appear on OpenAIRE’s portal.
A new index is published about every 2-3 weeks. The index preparation takes some time as the metadata records are de-duplicated and enriched.

A timetable of the past and planned index-updates can be viewed at: https://www.openaire.eu/aggregation-and-content-provision-workflows