For the ethical and experienced project manager, analyst or developer this is a troubling area. Most project manager job descriptions include the phrase business acumen. The PMI.org returns over 6500 hits for Business Acumen, the first one is in skill development.
The complement of leadership, business acumen and technical project management skills essential to employers of project talent. The knowledge and abilities necessary to manage scope, time, budget, stakeholders, teams, communications, risk and other project components.
Dealing with this kind of issue takes some business acumen to successfully resove. After all, what is project manager to do when time and budget are in a crunch and you have a list of “Asked Fors” , something that you know are not really needs? For me the answer is to review the project priorities with the project sponsor. Where do these items fit in relative to everything on the project plan that isn’t done yet and are positively needs. Can these requests be moved out of the MVP first delivery (and maybe out of the second then out of the third)? Of course, there is always the possibility that the what the project manager thinks is a just a want, may with more knowledge turn out to be something that really is a need. The important thing is that the discussion take place between the business and the delivery team.