Yannic enhanced the Build Event Service documentation in the fmeum/bazel repository, focusing on the --bes_upload_mode option to clarify the behavior of each upload mode, especially fully_async. By providing detailed explanations of potential data loss scenarios, Yannic aimed to reduce user confusion and misconfiguration, supporting safer configuration choices. The work involved updating Java-based documentation and applying expertise in build systems to improve onboarding and lower support overhead. While the contribution was limited to a single feature over one month, the update demonstrated careful attention to user guidance and maintainability, resulting in clearer, more actionable documentation for the Bazel community.