The BA should proceed by obtaining approval to change the policies that are either constraining or insufficient to achieve the value desired by the future state. This is because the BA’s role is to align the solution with the business need and ensure that it delivers value to the stakeholders. If the existing policies are preventing or limiting the value realization, the BA should seek to change them by following the appropriate governance process and obtaining the necessary buy-in from the policy owners and other affected parties. Modifying the solution to comply with the policies, identifying an assumption about future state value, or modeling two future states are not the best options because they do not address the root cause of the problem and may result in suboptimal or ineffective solutions. References:

CBAP / CCBA Certified Business Analysis Study Guide, 2nd Edition, Chapter 6: Strategy Analysis, page 254

Business Analysis Body of Knowledge (BABOK) Guide, Version 3, Chapter 5: Strategy Analysis, section 5.3: Define Future State, page 99

Business Analysis Professional Resources, IIBA Resource Collection, Business Analysis Body of Knowledge (BABOK) Guide

CBAP / CCBA Certified Business Analysis Study Guide, 2nd Edition, Skillsoft Book, Chapter 6: Strategy Analysis, page 254