Inviting the manager to the scheduled sprint review aligns with the principles of stakeholder engagement and communication management as outlined in the PMBOKGuide. It encourages transparency and provides an opportunity for early feedback, which is beneficial for the project's success. The PMBOKGuide emphasizes the importance of involving stakeholders and keeping them informed about the project's progress. By inviting the manager to the sprint review, the project manager is adhering to these best practices.
References: = PMBOKGuide1; PMP Examination Content Outline2; Professional in Business Analysis Reference Materials3.