The British broadcaster engaged in a "significant breach" of broadcasting rules by omitting to mention that the presenter of a documentary about the Gaza situation was the offspring of a Hamas administrator, according to regulatory body Ofcom.
An inquiry by the media regulator into the programme Gaza: How to Survive a Warzone has found that the documentary was "materially misleading".
The chief executive of the broadcaster had earlier expressed regret, saying there had been "a major oversight in relation to truthfulness".
The regulator has instructed the BBC to broadcast a evening statement about its decisions.
"Since this amounts to a major infringement of our rules, we are instructing the BBC to air a message of our conclusions against it on BBC2 at 21:00, with a schedule to be confirmed," it said.
'Possibility to Undermine Trust'
The regulator's statement said: "Our investigation determined that the programme's lack of disclosure that the narrator's parent occupied a post in the Hamas-administered government was materially misleading.
"Consequently that the viewers did not have vital facts which may have been extremely pertinent to their judgment of the voice and the details he provided.
"Trust is at the core of the bond between a media organization and its viewers, particularly for a state-funded media outlet such as the British Broadcasting Corporation.
"This error had the potential to damage the very considerable amounts of credibility that the public would have put in a documentary produced by the BBC about the Israel-Gaza war."
The film was withdrawn from the online platform in the month of February after the presenter's family links emerged, and in the month of July an broadcaster's internal assessment determined it infringed the organization's journalistic standards on truthfulness.
A BBC spokesperson said: "The Ofcom ruling is in line with the findings of the internal assessment, that there was a significant failing in the film in relation to the corporation's content standards on factual correctness, which corresponds to clause 2.2 of Ofcom's Broadcasting Code.
"We have apologised for this and we agree with Ofcom's decision in its entirety. We will comply with the directive as soon as the timing and wording are confirmed."
