You are the project manager on a large, enterprise system replacement project. The new system is tightly integrated. Your project has tight constraints on time and budget. You have received a request from one of the major business areas of your company to modify the new system to make it operate in a manner which is more consistent with the way business is conducted today. How would you handle the request? How would a project charter be applicable to this decision? please provide the valid references and it should be plagiarism free.