Worked on the apache/gravitino repository to address a bug in catalog update error reporting, focusing on improving the accuracy of user-facing messages during enable and disable operations. Utilized Java for backend development, specifically enhancing the error handler to preserve the original operation type from incoming requests. This approach ensured that error messages accurately reflected the actual operation, reducing confusion and streamlining debugging efforts. Strengthened the reliability of catalog update flows by updating and adding unit tests in TestCatalogOperations.java, supporting test-driven development practices. The changes improved observability and maintainability while minimizing user impact, demonstrating careful attention to backend robustness and testing.