A: A sandbox tenant in Workday is a production-like tenant used for user acceptance testing (UAT). It undergoes a weekly refresh, also known as cloning activity, where all data from the production instance, including transactional, configuration, and migrated data, is copied to the sandbox. This refresh ensures that the sandbox closely mirrors the production environment. The refresh occurs every Friday at the end of the day CST hours, and it is an automated, default setup for all clients globally.