PMP Practice: Determine Critical Information Requirements

Sol Matsumoto-Reyes is leading an agile transformation project at Kilimanjaro Freight Co, a mid-sized freight company. The executive sponsor, who comes from a traditional operations background, insists on having a detailed 12-month roadmap with fixed scope and deadlines before authorizing budget release. However, the development team has identified significant technical uncertainty around integrating legacy warehouse management systems with new cloud-based tracking APIs. The team estimates they will learn critical architecture constraints only after the first two sprints. The sponsor has made it clear that without a comprehensive plan, funding approval will be delayed by at least two months, potentially missing the peak shipping season window. What approach should Sol recommend?