Your question is Write Unambiguous Project Documentation. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
You are documenting a business process and system change before delivery starts. The goal is to make sure engineering, QA, operations, and business stakeholders all interpret the requirements the same way and do not make different assumptions later.
How do you write clear, concise documentation that leaves no room for ambiguity?