The University of Oxford faces significant challenges for research assessment due to its large size, organizational complexity, and decentralized structure. It has over 5,800 academic staff across 4 divisions and 44 separate colleges. Data is scattered across different departments and systems, and collecting consistent information for research assessment takes around 2.5 years. Assigning outputs to the correct units of assessment is difficult when research spans many disciplines. Ensuring consistent quality of case studies across the university's 31 units of assessment is also a challenge. Fully capturing the university's impact, which may occur in broad fields across departments, requires comprehensive data collection. Adopting common standards like ORCIDs could help integrate data but implementing them across the university's complex structures takes significant effort