The sponsor is typically the stakeholder who has the authority and responsibility to review and approve requirements. While the business analyst facilitates the elicitation and documentation of requirements, it is ultimately the sponsor who ensures alignment with business needs and grants formal approval. This approval validates that the documented requirements are complete, aligned with the project's objectives, and ready for implementation.
The sponsor's responsibilities include:
Endorsing the project's business case
Approving finalized requirements
Ensuring funding and organizational support
BABOK Reference:
Under the Requirements Life Cycle Management knowledge area, particularly in the task "Approve Requirements," the sponsor is identified as the stakeholder responsible for approving requirements.