The Sprint Goal is a summary statement of the Sprint objective, which ideally has a cohesive theme. The Sprint Goal also gives the Scrum Team guidance and flexibility on how to achieve the objective. The Sprint Goal is crafted by the entire Scrum Team during the Sprint Planning, based on the Product Owner's proposal of the most valuable Product Backlog items and the Development Team's forecast of the work that can be done in the Sprint. The Product Owner collaborates with the team to write the Sprint Goal and defines it on the basis of the value being sought. The Product Owner does not define the scope or the solution for the Sprint, but rather the outcome and the benefit. The Product Owner also does not work with stakeholders to set the Sprint Goal, but rather represents their interests and needs. The Product Owner has a role in crafting the Sprint Goal, but not the sole responsibility for it. References:
Professional Scrum Product Owner II Assessment
Understanding and Applying the Scrum Framework
Managing Products with Agility
The Role of the Product Owner during the Sprint
Sprint Goal - An Essential Ingredient in Scrum Recipe