the outcomes of the DTR WG can be summarized as: • Confirmation that detailed and precise data typing is a key consideration in data sharing and reuse and that a federated registry system for such types is highly desirable and needs to accommodate each community’s own requirements • Deployment of a prototype registry implementing one potential data model, against which various use cases can be tested • Involvement of multiple ongoing scientific data management efforts, across a variety of domains, in actively planning for and testing the use of data types and associated registries in their data management efforts • Integration with one additional RDA WG (Persistent Identifier Types) and at least one Interest Group (RDA/CODATA Materials Data, Infrastructure and Interoperability IG) • Development of a set of questions that require further consideration before a detailed recommendation on data typing can be issued.