This deliverable provides the first version of the DMP elaborated by the TWEETHER project. The purpose of this report is to provide an analysis of the main elements of the data management policy that will be used with regard to all the data sets that will be generated by the project. In particular, the deliverable outlines how research data will be handled during TWEETHER and describes what data will be collected, processed or generated and following what methodology and standards, whether and how this data will be shared and/or made open, and how it will be curated and preserved.