Worked on enhancing the reliability of the Apache Iceberg Go client by addressing a critical bug in the REST Catalog integration within the apache/iceberg-go repository. Focused on backend and API development using Go, the work involved correcting the RegisterTable endpoint to ensure it invoked the appropriate RegisterTable function rather than UpdateTable, aligning with the Iceberg REST API specification. This change was validated through local catalog testing, confirming correct REST behavior and reducing the risk of data catalog inconsistencies. The update improved code maintainability and strengthened production pipeline reliability for Go-based Iceberg integrations, supporting robust data operations and operator confidence.