The development team is expected to determine both functional and nonfunctional requirements. Some analysts may have strong business backgrounds which help them to understand the functional requirements quite well, but have a harder time even knowing what is important in the nonfunctional area. Similarly an analyst may have strong programming and other technical skills but not understand workflows or business process well.

With that in mind:

If you do not have a strong technical background, how do you ensure that you have found out all of the important nonfunctional requirements?

How do you test or validate that you are not missing important things? Similarly if you do not have a strong business process background, or very much knowledge about the problem domain (e.g. the business area being supported), how do you ensure that you have asked all the important questions and that your requirements are accurate, thorough, and comprehensive?

What are some techniques that might help you to have good interviews that get to the root of the issues?

Book: Satzinger, Jackson and Burd Systems Analysis and Design in a Changing World 7ed