Several Working Group projects develop and specify medical research methods, features or processes, and some even create software components or sub-systems for common tasks in drug development. As part of these efforts, a variety of SDTM or ADaM test datasets are required. The typical fallback position of project teams is to use data from the CDISC pilot project and/or anonymised study data that are provided by project team members. The Test Dataset Factory project aims to provide test data formatted in SDTM and ADaM that support a more systematic and comprehensive testing of these concepts and scripts.