The lineage harvester is a software application that is needed to collect your Power BI metadata and send it to the Collibra Data Lineage server, where the metadata is processed and a technical lineage and new Power BI assets and relations are created. Collibra Data Intelligence Cloud then import those assets and relations into Data Catalog.
For more information about the lineage harvester, read the Collibra Data Lineage documentation.
Note You need the lineage harvester 1.2.1 or newer to ingest Power BI metadata into Data Catalog.