As a PM, FM, RQ, SP, I can review the project benefits
Project Manager (PM), also PMO, PMA, PfM and PgM, Functional Manager (FM), Requester (RQ) and Sponsor (SP) can update a project business case summary at INITIATION > Project Benefits:

Project Managers (PM) can review the business case rationale with the mobile application. Once they have entered any organization (for instance, PMPeople), they need to select the role Project Manager, then the concrete project and finally, hit the menu option Initiation > Project Benefits:

In the mobile application, Requesters (RQ) can read this data, while Sponsor(SP) can also edit data.
Frequently Asked Questions
Who can update the project business case?
Project Managers, Sponsors, Functional Managers, and other management roles can update the business case summary at Initiation > Project Benefits.
Can I review the project benefits from the mobile app?
Yes. PMs and Sponsors can access the business case summary from the mobile app under Initiation > Project Benefits after selecting their role and project.
Can Sponsors and Requesters edit benefit data on mobile?
Sponsors can edit the business case via mobile, while Requesters can only view the data.