Final answer:
During PI Planning within SAFe, the Product Owner has the authority to make decisions at the user story level, prioritizing features and user stories, ensuring alignment with business objectives and customer value.
Step-by-step explanation:
In PI (Program Increment) Planning within the Scaled Agile Framework (SAFe), the Product Owner has content authority to make decisions at the user story level. During the PI Planning process, which is a significant event that occurs in SAFe, teams and stakeholders collaborate to outline the work for the upcoming program increment. However, it is the Product Owner who has the responsibility to prioritize features and user stories and to clarify the details and acceptance criteria for each user story.
The Product Owner acts as a representation of the customer's voice and ensures that the team's work aligns with the business objectives and delivers value. The Scrum Master, Release Train Engineer, and other stakeholders do provide input and assist in facilitating the process, but the ultimate authority on the specifics of user stories rests with the Product Owner.