Your manufacturing equipment upgrade project is in the executing phase. A key vendor has submitted deliverables for the third milestone, but during the inspection process, your quality assurance team identifies that 15% of the components do not meet the specifications outlined in the procurement contract. The vendor claims the specifications were ambiguous and requests additional payment to remake the components. This is causing a potential two-week delay. What is the BEST course of action?

You are managing a construction project with a fixed budget of $2.5 million and a 14-month timeline. During month 6, you conduct an earned value analysis and discover that the Cost Performance Index (CPI) is 0.85 and the Schedule Performance Index (SPI) is 0.92. The project sponsor asks you to forecast the final project cost and determine what actions are needed. Using the current performance trends, what is the most appropriate estimate at completion (EAC) if you believe current variances are atypical and future work will be performed at the planned rate?

Your organization is implementing a new customer portal using a hybrid approach. The database migration follows a waterfall methodology with detailed planning, while the user interface development uses Kanban with continuous flow. The project charter specifies a fixed go-live date in four months. During the first retrospective, the UI team identifies that database schema decisions are blocking their work, causing significant wait time. Stakeholders are concerned about meeting the deadline. How should you address this integration challenge?