“…At best some less direct influence can be gained by curators via policies, guidelines, and training. Issues regularly encountered concern missing meta data and context documentation, missing information on file formats (properties, dependencies, related software), lost or corrupted data files, and missing or unclear information on legal aspects (rights to access and use of data, as well as third party rights), e.g., [13,26]. As there is often a time lag of several years (or even decades) between the onset of data production or collection and the decision to publish and preserve data, there is a risk that these issues do not receive the necessary attention at the time the information gaps could still be closed easily.…”