Developed a persistence enhancement for the simonsobs/sotodlib repository, focusing on the update_obsdb component to improve data quality and workflow reliability. The work introduced a mechanism to track and persist bad book IDs using Python, leveraging data engineering and file I/O skills. When the skip_bad_books option is enabled, the system now raises an error if new bad books are detected, ensuring that issues are surfaced immediately rather than silently ignored. This approach enhances traceability and reproducibility in the data processing pipeline, supporting future audits and reducing manual debugging by making fault isolation and recovery more straightforward for downstream users.