Describe your method of working with the customer. How do you agree which tricks you use?
And sometimes it happens that the project has begun, the details have been specified, but then changes constantly occur that hinder the work. For me, this is a jamb of negotiations, for it is possible to describe either the TK, or the user story that you are asserting, you begin to make version 1.0, and if there are corrections, it will be quite miserable.