The current deliverable D6.4 – Data Management Plan (DMP) – outlines the updated version of data management plan demonstrating the framework under which the UNLOCK-CEI consortium monitored, generated, processed, and collected data during project activities, in accordance with the FAIR (Findable, Accessible, Interoperable, Reusable) principles.It indicates which data are publicly available through public repositories and which data are accessible only to the consortium (confidential) now that the project has concluded. The UNLOCK-CEI DMP also tackles how the data were exploited or made accessible for verification and re-use during the project life-time.The current document represents the final version of the UNLOCK-CEI Data Management Plan, in which we explain the information and frameworks utilized to collect and structure the project's data sets compared to the first plan which was a delivered in M6.