The article discusses the importance of validating software requirements to ensure they are complete and error-free. Various techniques like requirements reviews, prototyping, testing, and viewpoint-oriented validation are compared based on surveys conducted in Swedish software companies. The goal was to determine the most effective validation methods by analyzing factors like defect detection, time, and cost. The findings show the satisfaction levels of different industries with these techniques, helping to identify the best practices for ensuring high-quality software development.