To improve the team’s productivity, it is essential to keep both the product backlog and the iteration backlog up to date. The product backlog contains the overall product features and requirements, while the iteration backlog focuses on the work planned for the current iteration. Ensuring that both backlogs are updated as issues and new tasks arise will help maintain clarity and avoid confusion, enabling the team to prioritize and track progress more effectively. This will also help minimize delays and rework, as the team will have a clear, accurate view of what needs to be done and what has been accomplished.