Worked on the microsoft/json-schemas repository to enhance data integrity by refining schema validation processes. Focused on stabilizing the validation workflow, the developer implemented a JSON Schema OneOf constraint to strictly enforce allowed measure types, thereby reducing potential downstream errors and improving overall data quality. Addressed a bug identified through pull request feedback, ensuring that measure type validation aligned with project requirements. The work involved applying skills in API development, data validation, and schema design, with a particular emphasis on JSON and schema-based validation techniques. All changes were thoroughly documented to support maintainability and facilitate future enhancements to the repository.