• Verify the feature is enabled and accessible from the expected navigation path or configuration area in a test environment. • Test the end-to-end scenario with representative test data covering both happy paths and error conditions. • Validate correct behavior across all relevant user roles and permission configurations (admin, manager, employee). • Test edge cases: empty or missing values, boundary conditions, concurrent users, and large data sets. • Confirm that existing integrations, workflows, and downstream processes are not affected by the change. • Validate time-off balances, accrual rules, and calendar calculations remain accurate after the update. • Run a payroll simulation in the test environment and compare results to confirm no discrepancies. • Test feature visibility and access controls across different RBP roles to confirm correct enforcement.