The project manager should compare the achieved results to the contract requirements before obtaining financial, legal, and administrative approval to close the project and transfer the liability. This is because the project manager needs to ensure that the supplier has fulfilled all the contractual obligations and delivered the agreed scope, quality, and performance standards. The project manager should also verify that the supplier has completed all the required documentation, testing, training, and warranty services. The project manager should also review the lessons learned, feedback, and satisfaction surveys from the supplier and the project team. This will help the project manager evaluate the supplier's performance, identify any issues or disputes, and resolve them before making the final payment and closing the project. The project manager should also communicate with the supplier and the relevant stakeholders about the project closure and the transfer of liability. References: (Professional in Business Analysis Reference Materials source and documents)
* PMBOK Guide, 6th edition, Section 12.3.1, "Close Procurements: Inputs"
* PMBOK Guide, 6th edition, Section 12.3.2, "Close Procurements: Tools and Techniques"
* PMBOK Guide, 6th edition, Section 12.3.3, "Close Procurements: Outputs"
* PMI-PBA Guide, 1st edition, Section 6.4.1, "Evaluate Solution: Inputs"
* PMI-PBA Guide, 1st edition, Section 6.4.2, "Evaluate Solution: Tools and Techniques"
* PMI-PBA Guide, 1st edition, Section 6.4.3, "Evaluate Solution: Outputs"