In a situation where the original vehicle supplier cannot deliver as agreed, the project manager should first review the existing service contracts for any clauses or options that could facilitate the procurement of the vehicles. This action is in line with the best practices of procurement management, which suggest exploring all contractual avenues and existing relationships before seeking external solutions2. It also adheres to the principles of change management, ensuring that any alterations to the project plan are made within the framework of established agreements and with proper oversight3. References: = Exam PMP topic 1 question
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