Root cause analysis is a technique that involves identifying and analyzing the underlying causes of a problem or an issue. Root cause analysis can help the business analyst to determine how the selection criteria requirement was missed, and to prevent similar errors from occurring in the future. Root cause analysis can be done using various tools, such as fishbone diagram and the Five Whys. A fishbone diagram is a graphical tool that organizes the possible causes of a problem into categories, such as people, process, technology, environment, etc. A fishbone diagram can help the business analyst to visualize the relationships between the causes and the effects, and to identify the most likely root causes. The Five Whys is a questioning technique that involves asking "why" repeatedly until the root cause of a problem is revealed. The Five Whys can help the business analyst to drill down into the details of the problem, and to uncover the underlying factors and assumptions that led to the missed requirement. References: PMI Professional in Business Analysis (PMI- PBA) Examination Content Outline1, page 21; Business Analysis for Practitioners: A Practice Guide2, page
101.