Re: I don't understand
Some (but not all) of the fault for this FUBAR has to be borne by the (let's be generous) 'people' who waited until the last minute before trying to renew their VED. Anyone who's been to a Post Office on the last day of any month will know not to leave it until then.
But it does look like the NFRs either weren't properly specified, or tested. Or if they were, that failings were just waived through. Take your pick, but no-one comes out of this whiter than white.