The public service broadcaster engaged in a "serious breach" of media regulations by not revealing that the voice of a film about the Gaza situation was the offspring of a Hamas official, as determined by UK media regulator Ofcom.
An probe by the media regulator into the documentary titled Gaza: How to Survive a Warzone has determined that the programme was "materially misleading".
The BBC's director general had previously apologised, stating there had been "a significant failing in relation to factual correctness".
The regulator has directed the corporation to transmit a prime-time declaration about its conclusions.
"As this represents a significant violation of our rules, we are instructing the BBC to transmit a message of our determinations against it on BBC2 at nine o'clock in the evening, with a date to be confirmed," it said.
'Potential to Damage Confidence'
The regulator's announcement stated: "Our investigation found that the film's lack of disclosure that the voice's father served in a role in the Hamas-controlled administration was significantly deceptive.
"It meant that the viewers did not have vital facts which may have been highly relevant to their evaluation of the voice and the content he shared.
"Credibility is at the center of the connection between a television network and its public, especially for a national broadcasting corporation such as the British Broadcasting Corporation.
"This error had the potential to damage the very considerable amounts of confidence that audiences would have put in a documentary produced by the BBC about the conflict in Gaza."
The programme was removed from the BBC's streaming service in last February after the narrator's family links came to light, and in the month of July an broadcaster's internal assessment determined it violated the corporation's content policies on truthfulness.
A representative for the broadcaster stated: "The Ofcom ruling is in accordance with the conclusions of the corporation's inquiry, that there was a serious error in the documentary in relation to the corporation's content standards on truthfulness, which aligns with Rule 2.2 of the regulator's media standards.
"We issued an apology for this and we agree with Ofcom's decision in full. We will adhere to the directive as soon as the date and wording are finalised."
