The British broadcaster engaged in a "serious breach" of broadcasting rules by not revealing that the voice of a film about Gaza was the son of a Hamas representative, as ruled by British broadcasting authority Ofcom.
An investigation by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has concluded that the film was "significantly deceptive".
The BBC's director general had earlier expressed regret, saying there had been "a major oversight in relation to factual correctness".
The authority has directed the broadcaster to broadcast a peak-time statement about its conclusions.
"Since this amounts to a significant violation of our regulations, we are ordering the corporation to transmit a announcement of our findings against it on BBC2 at 9pm, with a schedule to be confirmed," the statement read.
'Potential to Damage Confidence'
The regulator's announcement stated: "The inquiry we conducted found that the documentary's lack of disclosure that the voice's male guardian held a position in the Hamas-controlled administration was substantially inaccurate.
"This implied that the audience did not have critical information which may have been highly relevant to their judgment of the voice and the information he provided.
"Trust is at the heart of the bond between a media organization and its viewers, particularly for a national broadcasting corporation such as the BBC.
"This failing had the risk to undermine the significantly high levels of confidence that audiences would have placed in a documentary produced by the BBC about the conflict in Gaza."
The film was pulled from iPlayer in last February after the narrator's familial connections emerged, and in the month of July an broadcaster's internal assessment concluded it violated the organization's journalistic standards on factual correctness.
A corporation official said: "The Ofcom ruling is in agreement with the conclusions of Peter Johnston's review, that there was a serious error in the programme in relation to the corporation's content standards on truthfulness, which reflects clause 2.2 of Ofcom's Broadcasting Code.
"We issued an apology for this and we comply with Ofcom's decision in complete. We will adhere to the directive as soon as the timing and wording are confirmed."
