Corrective Action is-based on a nonconformance event that has happened in the past. Preventive Action is based on preventing a nonconformance event in the future. Corrective and Preventive Actions are integral parts of a continuous improvement program. To correct or prevent a problem, you have to accurately define the root cause, or your efforts are likely to miss the mark. You may take care of the problem in the short term, but without getting to the root, the issue has high potential to happen again.An effective CAPA will prevent the noncompliance from reoccurring. An effective CAPA system can help prevent a warning letter during an audit. Cost of quality rises substantially as defects come to light closer to the customer another benefit of CAPA is the ability to capture quality issues early in production, thus helping to reduce cost of quality with synergistic processes.