The purpose of ReZilient Deliverable 1.3 Data Management Plan (DMP) is to contribute to good data handling by describing what research data the project expects to use, data handling principles, and an assessment of what data can be shared with the public or why data cannot be open. Furthermore, it gives instructions on naming conventions and metadata structure.Ethical aspects related to data collection, generation and sharing have been considered. All datasets will be uploaded, stored and handled in accordance with national and European rules on data protection and privacy. Metadata will be added to all datasets, and instructions on how to upload, store, publish and preserve research data is provided in this document.ReZilient will use Zenodo, a trusted and OpenAire compliant data repository to comply with the FAIR data principles. The ReZilient project will also use GitLab, a trusted platform for collaborative software development, to comply with the Horizon Europe Open Access mandate. All data sets with dissemination level "Public" will be uploaded to the ReZilient communities hosted on Zenodo(htps://zenodo.org/communities/rezilient-project-eu) and GitLab (htps://gitlab.sintef.no/rezilient). Each dataset will be given a persistent identifier (Digital Object Identifier, DOI), supplied with relevant metadata, and linked to the project acronym and grant agreement number. Publications and underlying research data will be linked, and a Creative Commons license will regulate reuse of the ReZilientresearch data. Data security arrangements are defined.The DMP will be updated in project months 30 and 48. The final version of the DMP will include instructions for how to access and reuse open research data from ReZilient.