Our team would respond as a group. We'd welcome the change. We'd be grateful that our customer has highlighted this problem to us and that they found it before we released. We would know that incorporating a change won't be a big issue for us; our code, testing and deployment/release strategies are all designed to accommodate this kind of request.
We would work together (our customer is part of the team) to discover more about the missing requirement. We'd use our toolkit to elaborate the feature with our customer, writing out the User Stories (an Agile requirement gathering tool we'll discuss in Chapter 4, Gathering Agile User Requirements) and if necessary prototyping the user experience and writing scenarios for each of the ...
