Worked on the 2gis/on-premise-helm-charts repository to clarify and document the data retention policy for Navi-Castle service settings. Focused on aligning storePeriod retention and backup copy behavior with operational guidance, the work improved compliance visibility and reduced ambiguity for operators and support teams. Leveraged DevOps practices and Kubernetes expertise to enhance the maintainability of Helm chart documentation, using Markdown to ensure clear and accessible policy descriptions. The contribution addressed potential misconfigurations by making retention settings explicit, supporting smoother operations and reducing support overhead. This effort strengthened knowledge transfer within the team and improved the overall reliability of data retention processes.