The document provides guidance on writing a data management plan (DMP). It explains that DMPs are now required by many funders to accompany grant applications. A DMP outlines how research data will be managed and shared during and after a project. It should address issues like the type of data being collected, documentation, storage and backup plans, data sharing and reuse, legal and ethical concerns, and long-term preservation. Writing a DMP helps ensure good data management practices and that a project is compliant with funder policies supporting open access to research data.