Just like your publications, data that you have collected for your research constitute research output, too. Therefore you are required to record your datasets in PURE. Your datasets can be of interest to others, which can in turn lead to new collaboration opportunities. Datasets recorded in PURE also appear in reports that are used for research evaluations. Even if access to your dataset is closed, you are required to register your dataset in PURE. It is a record of the research, data collection and analysis that you have carried out.