PMP Practice: Recommend options for improvement based on quality gaps

Ocean Reyes is leading a hybrid project at Sourdough Signal Corp to develop a mobile app with both new features and infrastructure upgrades. The team uses two-week sprints for feature development and follows a predictive approach for infrastructure work. During the retrospective for Sprint 3, three team members independently report that recent API integrations are failing quality checks at a rate of 35%, causing significant rework. The team has already completed root cause analysis and identified that inconsistent API documentation from the infrastructure team is the primary cause. What should Kenji do next?