Yes, the project should be approved in the early stages of A3 use. A DMAIC project charter outlines the initial elements of a project including a problem and goal statement, scope, a business case, timeline and team members. The charter serves as a tool to get clear on the initial problem and agreement on what the project will be with stakeholders. An A3 is different because it helps you work through an entire project on one sheet of paper including root causes and countermeasures. The elements of a project charter may fit only in the the 1st box on the left side of an A3.