Worked on the sonic-net/SONiC repository to enhance the High-Frequency Telemetry High-Level Design documentation, focusing on clarifying that the Observation Domain ID is vendor-specific. This update addressed integration ambiguity for telemetry implementations, supporting smoother onboarding for telemetry vendors and aligning documentation with real-world deployment scenarios. The work involved technical writing and documentation skills, utilizing Markdown to ensure precision and traceability. By formally signing off on the changes, the developer strengthened documentation governance and provided a clear reference for future design modifications. The contribution improved the accuracy of observability telemetry documentation, facilitating better cross-team collaboration and vendor integration processes.