Worked on the OpenLiberty/open-liberty repository to enhance test configurability for FAT checkpoint testing by introducing a new configuration property. Developed and delivered a feature that exposes the CRIU branch version through the fatCommon.properties file, enabling deterministic validation and improved traceability across different environments. Focused on configuration management using properties files, the implementation allows teams to specify the CRIU version for FAT steps while maintaining compatibility with z/OS systems. The approach emphasized clear documentation at the commit level and precise feature boundaries, supporting reproducible testing workflows and facilitating cross-environment consistency without introducing any bug fixes during the period.