A number of BBC staff members have been disciplined after a worker posed as a phone-in competition caller on Jo Whiley's Radio 1 show in April 2006.
Radio 1 morning DJ Jo Whiley was unaware of the impostor
The incident came to light after the BBC found a string of other editorial breaches in TV and radio shows.
The BBC said the DJ, who hosts the late morning show, was unaware that the caller was not a member of the public.
The BBC's governing body, the BBC Trust, said it was "satisfied" managers were taking appropriate action.
On Wednesday, Whiley will apologise on air for the latest editorial slip-up, which happened during a pre-recorded section of her show on 20 April last year.
She usually presents her daily three hour show live, but on this occasion taped part of it 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.
It comes after BBC managers found that competition results were fabricated on shows including 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 stand-in as a contest winner.
Blue Peter editor Richard Marson has left his job, while 6 Music's head of programmes Ric Blaxill has 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."