BCS Exam RE18 Topic 14 Question 13 Discussion

A project has been running at the Wield Engineering Company for six months. The requirements have been signed off and development is underway; however, the development team has hit a problem and cannot implement an approved requirement. The business analyst has been asked to discuss this with the requirement owner.

Before booking a meeting with the owner, the business analyst decides to check whether there are more requirements affected by this technical limitation.

What will help the business analyst discover other affected requirements?