Radio 1 DJ Jo Whiley has apologised on air after a worker posed as a phone-in competition caller on her show.
The BBC said Whiley was unaware the winner had been faked
A number of BBC staff members were disciplined after the incident which happened during a pre-recorded section of her show on 20 April last year.
It came to light after the BBC found a string of other editorial breaches in its TV and radio programmes.
Whiley, who was unaware the caller was not a member of the public, said: "It was wrong, and for that we are sorry."
The DJ usually presents her late-morning show live but, on the morning in question, part of it was pre-recorded so she could be at the opening of the refurbished Broadcasting House in London with the Queen.
A number of CDs were on offer in the competition but the prizes were not awarded.
Plan of action
A trawl of BBC shows found that competition results were fabricated on Blue Peter, Comic Relief and thee programmes on digital radio station 6 Music.
The BBC was fined £50,000 in July after Blue Peter passed off a studio guest as a phone-in competition winner.
Blue Peter editor Richard Marson has since left his job, while 6 Music's head of programmes Ric Blaxill resigned.
Director general Mark Thompson has announced a plan of action to ensure standards do not slip again, including training all staff about truth and honesty and setting up a new editorial standards board.
A statement about the latest incident from the trust said: "The breach raises no new issues which require any change to the director general's action plan."