In project management, it is crucial to manage stakeholder expectations effectively. This can be achieved by clearly specifying the scope and features in the contract. This approach aligns with the PMBOK Guide's emphasis on clear communication and setting realistic expectations. By defining the scope and features clearly, the project manager can set boundaries and manage both customer and third-party expectations, which is essential for project success. This strategy helps prevent scope creep, ensures that all parties are on the same page, and facilitates smoother coordination among all stakeholders involved.
: (PMBOK Guide - Sixth Edition, Section 1.2.3.1 - Project Scope Management)

A self-organizing team is a team that has the autonomy and authority to manage its own work and make its own decisions.
A self-organizing team is also expected to adapt to changing situations and learn new skills as needed.
Therefore, the best management decision for this situation is to provide opportunity for team members to learn and adjust to the new technology, rather than moving them, adding new members, or re- assigning the project.
This will help the team overcome the learning curve and improve their velocity in the future.
It will also foster trust, collaboration, and innovation within the team.
Providing opportunity for team members to learn and adjust to the technology is consistent with the agile principles and values, which emphasize continuous improvement, customer satisfaction, and team empowerment.
It is also covered in the PMBOK Guide under the Develop Team process, and in the PMI-PBA Exam Content Outline under Domain III: Analysis.
References:
* PMBOK Guide, 7th edition, page 247
* PMI-PBA Exam Content Outline, 2018, page 11
* Agile Manifesto

The project manager should determine the critical requirements to bridge the gap and ensure the project delivers the expected business value. This is because the project manager is dealing with a new and innovative solution that may have unclear or ambiguous scope and expectations. The project manager should review the RFP and identify the key terms and conditions that define the project objectives, deliverables, and constraints.
The project manager should also engage with the customer and other stakeholders to elicit, analyze, and prioritize the requirements that are essential for the project success. The project manager should ensure that the critical requirements are aligned with the project vision, scope, and business value, and that they address the compliance issues that may arise in the project context. The project manager should not document the risks and mitigations, as this would be a subsequent step after determining the critical requirements. The project manager should not define the project schedule, as this would be a premature and risky action without having a clear understanding of the project scope and requirements. The project manager should not create a project scope statement, as this would be a formal document that requires the approval of the customer and other stakeholders, and that may not be feasible or appropriate for a new and innovative solution. References:
(Professional in Business Analysis Reference Materials source and documents)
* PMBOKGuide, 6th edition, Section 5.2, "Collect Requirements"
* PMBOKGuide, 6th edition, Section 5.3, "Define Scope"
* PMBOKGuide, 6th edition, Section 5.4, "Create WBS"
* PMBOKGuide, 6th edition, Section 5.6, "Control Scope"

In the context of project management, when a risk is identified related to a component from a preferred vendor, it's important to have a risk mitigation strategy in place. Identifying an alternative component in case of incompatibility is a proactive approach that allows the project to continue without major disruptions if the risk materializes. This is part of risk management where you can mitigate risks by avoiding, accepting, reducing, or transferring them1. It's also important to note that the choice of risk mitigation strategy should consider the impact and probability of the risk, the cost of the mitigation action, and the constraints of the project. References:
https://www.coursera.org/articles/how-to-manage-project-risk
https://www.pmi.org/learning/library/delayed-projects-schedule-strategy-10148