You are creating the solution scope for an identified problem in your organization. You are working with several stakeholders during this process including the domain subject matter expert, the…

The domain subject matter expert contributes knowledge about the business domain but does not own or write the project scope.

The business analyst is responsible for the solution scope, not the project scope; writing project scope falls under project management, not business analysis.

The project manager is accountable for defining and documenting the project scope as part of project scope management, covering what work is and is not included in the project. This is distinct from the solution scope, which describes the solution to the business problem and is owned by the business analyst. Confusing the two scopes is a common error - the BA defines the solution, the PM defines the project.

The sponsor authorizes and funds the project and approves the scope but delegates the actual writing of the project scope to the project manager.