This document discusses Corrective and Preventative Action (CAPA) systems. It defines CAPA as a quality system used to eliminate causes of nonconformities and prevent their recurrence. CAPA systems are required to minimize risks, meet regulatory requirements, and enable continuous improvement. Common mistakes include procedural failures, documentation errors, inadequate training, and failure to identify root causes or ensure corrective actions. A proper CAPA system aims to identify and address risks, incidents, training needs, and quality system weaknesses. The overview outlines the typical CAPA process of discovery, investigation, root cause analysis, corrective action, and follow up.