Answer: No. Andy must not approve the PBP request at this time because it is not 100% complete.
Explanation:
Performance-based payment is the transfer of money after a measurable action has been taken or a performance target that has been predetermined has been met.
In this scenario, we are told that the contractor has completed 99% of the mock-up, but ran into a delay with a 3rd tier subcontractor and that the contractor then inform Andy that the mock-up will be 99% complete at the time of the Government review. Dur to this, Andy should not approve this because the PBP event is not yet 100%. For payment to be approved, it must be 100%.