Without knowing the details, I’d ask if the person responsible KNEW what he was doing and simply abrogated responsibility by taking the easy option (and probably moved on, upwards, before it was spotted). Or if a genuine mistake was made and he's doing his best to correct it.
I once asked my XD in DPA why he promoted people who continually cocked-up like this. His response was that they had "learned a valuable lesson”. When asked why he didn’t promote people who (a) had never made such a mistake in the first place and had a long track record of delivering to time, cost and performance, and/or (b) the people who spend their careers successfully cleaning up these cock-ups, he wouldn’t reply. Speaks volumes.