The British broadcaster committed a "significant breach" of broadcasting rules by not revealing that the narrator of a film about the Gaza situation was the child of a Hamas official, as ruled by UK media regulator Ofcom.
An inquiry by the media regulator into Gaza: How to Survive a Warzone has found that the programme was "significantly deceptive".
The chief executive of the broadcaster had already issued an apology, noting there had been "a major oversight in relation to accuracy".
Ofcom has directed the broadcaster to air a peak-time statement about its conclusions.
"Given this constitutes a serious breach of our code, we are ordering the corporation to transmit a announcement of our determinations against it on the BBC's second channel at 21:00, with a schedule to be finalised," the statement read.
'Risk to Undermine Trust'
The regulator's announcement said: "The inquiry we conducted found that the film's omission to reveal that the voice's parent served in a position in the Hamas-run administration was materially misleading.
"Consequently that the audience did not have critical information which may have been very significant to their judgment of the voice and the content he presented.
"Confidence is at the heart of the bond between a media organization and its public, notably for a national broadcasting corporation such as the BBC.
"This error had the potential to erode the exceptionally strong levels of confidence that viewers would have invested in a documentary produced by the BBC about the Israel-Gaza war."
The documentary was removed from iPlayer in February after the boy's personal associations came to light, and in this past July an internal BBC review concluded it violated the broadcaster's editorial guidelines on factual correctness.
A corporation official commented: "The Ofcom ruling is in agreement with the results of Peter Johnston's review, that there was a major oversight in the programme in relation to the corporation's content standards on truthfulness, which corresponds to Rule 2.2 of Ofcom's Broadcasting Code.
"We expressed regret for this and we accept the regulator's ruling in full. We will follow the penalty as soon as the schedule and language are confirmed."
