The document outlines the principles and processes of qualification and validation within Good Manufacturing Practices (GMP), emphasizing their importance in ensuring product safety, quality, and efficacy. It details the necessary documentation, management involvement, and multidisciplinary collaboration required for effective validation, as well as the specific stages and requirements involved in qualification and validation practices. Additionally, it explains approaches to validation, including prospective and retrospective methods, and highlights the need for change control and periodic revalidation following any significant modifications.