What is one of the main purposes of the project charter?

The project charter is the document that formally authorizes the existence of a project and grants the project manager the authority to apply organizational resources to project activities. It is created during the Develop Project Charter process in the Initiating process group and is the foundational document that brings the project into official existence.

Formal acceptance of the project management plan is not a project charter function; the plan is developed later and approved through a different process.

Detailed budget approval is handled through the Determine Budget process and related planning documents, not the project charter.

Defining stakeholder roles and responsibilities is accomplished through tools like the responsibility assignment matrix and resource management plan, not the project charter.