According to SAFe, what is one output of a successful Iteration Retrospective?

According to SAFe, one output of a successful Iteration Retrospective is the creation of a few improvement Stories that enter the Team Backlog for the next iteration. These stories reflect the team’s agreement on what they can do better in terms of their process, practices, and performance. The improvement stories are visible and prioritized along with the other stories in the backlog. They help the team implement the concept of relentless improvement, which is one of the core values of SAFe.