To ingest external data sources such as LibGuides, ArchivesSpace, and institutional repositories into Primo VE for discovery by your users, you will need to map and transform data as a part of that ingest process. To map and transform data, you need to use discovery normalization rules. In this session, learn to create and test discovery normalization rules for external data sources. Learn both Dublin Core and XML rule syntax, and why you might choose one over the other for your rules. See real-life examples of rules created for processing Islandora, LibGuides, ArchivesSpace, and Figshare data sources. Prior to the conference, attendees will have the opportunity to submit their own examples of data transformations they would like to have addressed in the presentation.