This presentation highlights the essential topic of GDP/GMP-compliant implementation of distribution measurements (mappings) in the context of refrigerator qualification. It provides an in-depth insight into the regulatory requirements and best practices that are essential for smooth refrigerator qualification. This includes suitable evaluation methods and forms of presentation of mapping measurements, as well as essential components of the documentation. The practice-orientated presentation focuses on the importance of validated software to ensure accurate and reproducible distribution measurements and shows how this contributes to compliance with the highest quality and safety standards.