The public service broadcaster committed a "serious breach" of broadcasting rules by not revealing that the narrator of a film about the Gaza conflict was the son of a Hamas official, as determined by British broadcasting authority Ofcom.
An probe by Ofcom into the programme Gaza: How to Survive a Warzone has found that the documentary was "materially misleading".
The head of the BBC had previously apologised, noting there had been "a major oversight in relation to factual correctness".
The regulator has ordered the corporation to broadcast a prime-time statement about its decisions.
"As this represents a significant violation of our code, we are ordering the BBC to broadcast a announcement of our findings against it on the BBC's second channel at nine o'clock in the evening, with a schedule to be confirmed," the regulator stated.
'Risk to Undermine Trust'
The watchdog's report said: "Our investigation concluded that the documentary's omission to reveal that the voice's male guardian held a position in the Hamas-administered government was significantly deceptive.
"It meant that the public did not have vital facts which may have been very significant to their evaluation of the voice and the content he presented.
"Confidence is at the heart of the bond between a television network and its viewers, especially for a state-funded media outlet such as the public broadcaster.
"This oversight had the potential to damage the exceptionally strong degrees of credibility that audiences would have invested in a BBC factual programme about the Gaza conflict."
The film was pulled from the online platform in the month of February after the presenter's family links were revealed, and in this past July an broadcaster's internal assessment found it breached the organization's editorial guidelines on accuracy.
A corporation official stated: "The Ofcom ruling is in accordance with the results of Peter Johnston's review, that there was a significant failing in the film in relation to the broadcaster's journalistic policies on truthfulness, which reflects Rule 2.2 of Ofcom's Broadcasting Code.
"We issued an apology for this and we agree with the regulator's ruling in full. We will follow the sanction as soon as the schedule and wording are confirmed."
