The project charter is issued by the sponsor to empower the Project Manager with the authority to begin the project and obtain resources for project activities. The project charter should include at a minimum the following:Business need for the project which links the project to the organization's overall strategyStakeholders and their initial requirementsObjectives or quantifiable criteria that must be met for the project to be considered successfulDefinition of what is in scope (at least at a high level), as well as out of scope for the projectConstraints and assumptionsOne of the concerns which may arise is the "Who Made you the Boss" question. The charter helps identify the organization of the project. Without a charter it would hinder the PM from being successful in their role. If the project is important to the business, then the additional time and effort should be put to create the charter. Why risk the additional work with having to share who you are/what your role is.