According to the PMBOK Guide, 6th edition, one of the key skills of a project manager is to negotiate with stakeholders to achieve project objectives and balance the competing project constraints. Negotiation is also a tool and technique for the process of Manage Stakeholder Engagement, which aims to ensure that stakeholders' needs and expectations are met or exceeded. By engaging in creative and iterative negotiations with the leaders of each entity, the project manager can foster collaboration, trust, and commitment among the parties involved in the project, and ensure that the launch date is acceptable and feasible for all. This will increase the likelihood of timely and successful adoption of the new solution by the entire organization. References: PMBOK Guide, 6th edition, pages 53, 513-514, 518.

When a new regulatory feature is introduced that exceeds the capacity of the remaining iteration, it is essential to engage stakeholders in a discussion to reprioritize the work. This aligns with agile principles, which emphasize collaboration, customer feedback, and responding to change. The project lead should facilitate a meeting with stakeholders to determine the most valuable features and adjust the scope of the final iteration accordingly. This may involve deferring less critical features to a later release or finding other ways to accommodate the new requirement within the project constraints.
References: = The PMBOK Guide supports this approach by advocating for stakeholder engagement and collaboration to manage project changes effectively. Iteration reviews are a critical time to reassess priorities and ensure that the project delivers the most value within its constraints123.

According to the Agile Methodology1, the product owner is responsible for defining the product vision, managing the backlog, and ensuring that the development team is working on the right priorities. The product owner is also the primary customer advocate and the link between the business and technology strategy.
Therefore, the product owner's engagement and interest are crucial for the success of the project. If the product owner changes during the project, the project manager should reevaluate the new product owner's needs, expectations, and communication preferences, and adjust the collaboration accordingly. This can help to avoid delays, misunderstandings, and conflicts, and ensure that the product owner is aligned with the project goals and the development team. The project manager should also facilitate the transition of the product owner role and ensure that the new product owner is familiar with the product vision, the backlog, and the agile principles and practices. References:
3: Agile Methodology: Role of Product Owners & Development Teams

The benefits realization plan is a document that describes how the benefits of the project will be delivered, measured, and sustained. It includes the benefits identification, analysis, planning, realization, and transition activities. By monitoring and updating the benefits realization plan, the project manager can ensure that the work carried out and the product being created do not deviate from the prescribed business value. Monitoring and updating the benefits realization plan helps to track the progress and performance of the project and the benefits realization process, and to identify and address any gaps or issues that may arise. Monitoring and updating the benefits realization plan also helps to communicate and report the value of the project to the stakeholders and the senior management. References: (Professional in Business Analysis Reference Materials source and documents) PMBOK Guide, 6th edition, Section 4.5.3.1, p. 123 PMI Professional in Business Analysis (PMI-PBA) Examination Content Outline, Domain IV: Traceability and Monitoring, Task 2, p. 13 Business Analysis for Practitioners: A Practice Guide, Section 5.3.1, p. 113

The project manager should ask the SMEs to share the knowledge transfer documents with all other members by placing the documents in the PMIS, as this is the best way to ensure knowledge transfer across the team.
The PMIS is a system that collects, organizes, and distributes project information to the project stakeholders.
By using the PMIS, the project manager can ensure that the process deviations captured by the SMEs are communicated and documented to the rest of the team, and that the team has access to the latest and accurate information. This will also help the project manager to monitor and control the project performance and quality, and to identify and address any issues or risks that may arise from the deviations.