Worked on the delta-io/delta-rs repository to strengthen Change Data Feed (CDF) handling by implementing robust validation for column mapping configurations. Focused on backend development using Rust, the work introduced error-handling mechanisms that reject CDF scans on Delta tables with unsupported column mapping, thereby preventing incorrect results and enhancing data reliability. The approach enforced validation at scan time, reducing the risk of subtle data inconsistencies in CDF workflows. This contribution involved close collaboration with other maintainers and adherence to established contribution standards, demonstrating a methodical approach to improving data correctness through targeted bug fixes and comprehensive testing practices.