"We won't need to reject a flight plan as the data we receive will always be perfect!" sounds like an approach to error handling that will lead to these sort of

"We won't need to reject a flight plan as the data we receive will always be perfect!" sounds like an approach to error handling that will lead to these sort of situations. The issue should have been caught in one of the higher systems, and then the error should have also been handled in a more appropriate way.