Worked on the awslabs/amazon-documentdb-tools repository, focusing on enhancing the Compatibility Tool’s diagnostic capabilities. Addressed a user-facing issue by implementing a targeted bug fix in Python, ensuring that unsupported operator warnings now display the correct operator name and execution count. This change improved the clarity and accuracy of diagnostic messages, reducing potential user confusion and support requests. The solution involved careful code refactoring and debugging, followed by validation through targeted tests and code review. By aligning with established testing and review processes, the work contributed to a more transparent user experience and maintained the reliability of the tool’s reporting features.