The British broadcaster was found to have committed a "major breach" of broadcasting rules by not revealing that the voice of a documentary about the Gaza situation was the offspring of a Hamas official, as ruled by UK media regulator Ofcom.
An investigation by Ofcom into the documentary titled Gaza: How to Survive a Warzone has concluded that the film was "substantially inaccurate".
The head of the BBC had previously apologised, noting there had been "a significant failing in relation to accuracy".
Ofcom has directed the BBC to air a peak-time announcement about its conclusions.
"Given this constitutes a significant violation of our regulations, we are directing the corporation to air a announcement of our determinations against it on BBC2 at 9pm, with a schedule to be confirmed," the regulator stated.
'Possibility to Erode Confidence'
The regulator's statement stated: "Our investigation found that the programme's omission to reveal that the narrator's parent held a position in the Hamas-controlled authority was significantly deceptive.
"It meant that the viewers did not have critical information which may have been very significant to their evaluation of the presenter and the information he shared.
"Confidence is at the core of the connection between a media organization and its viewers, particularly for a national broadcasting corporation such as the British Broadcasting Corporation.
"This error had the possibility to undermine the significantly high degrees of trust that the public would have invested in a BBC factual programme about the conflict in Gaza."
The programme was pulled from the BBC's streaming service in February after the presenter's personal associations came to light, and in July an broadcaster's internal assessment concluded it breached the corporation's content policies on truthfulness.
A BBC spokesperson commented: "The Ofcom ruling is in agreement with the findings of the internal assessment, that there was a serious error in the film in relation to the BBC's Editorial Guidelines on factual correctness, which aligns with regulation 2.2 of Ofcom's Broadcasting Code.
"We expressed regret for this and we accept the regulator's ruling in complete. We will comply with the penalty as soon as the date and language are finalised."
