The public service broadcaster engaged in a "serious breach" of industry standards by not revealing that the presenter of a film about the Gaza situation was the offspring of a Hamas official, as determined by British broadcasting authority Ofcom.
An investigation by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has found that the film was "significantly deceptive".
The head of the BBC had already issued an apology, saying there had been "a significant failing in relation to accuracy".
The regulator has directed the corporation to transmit a prime-time announcement about its findings.
"Since this amounts to a major infringement of our rules, we are directing the broadcaster to transmit a statement of our conclusions against it on BBC Two at 9pm, with a timing to be confirmed," the statement read.
'Possibility to Undermine Credibility'
The regulator's statement declared: "Our probe concluded that the film's omission to reveal that the presenter's male guardian held a position in the Hamas-administered administration was materially misleading.
"It meant that the public did not have vital facts which may have been very significant to their evaluation of the presenter and the details he presented.
"Confidence is at the heart of the connection between a broadcaster and its viewers, notably for a public service broadcaster such as the public broadcaster.
"This oversight had the potential to undermine the exceptionally strong levels of trust that the public would have put in a documentary produced by the BBC about the Israel-Gaza war."
The documentary was withdrawn from the online platform in February after the narrator's familial connections emerged, and in the month of July an broadcaster's internal assessment found it violated the organization's content policies on factual correctness.
A corporation official stated: "The regulator's decision is in line with the conclusions of the internal assessment, that there was a serious error in the documentary in relation to the broadcaster's journalistic policies on factual correctness, which reflects regulation 2.2 of Ofcom's Broadcasting Code.
"We issued an apology for this and we agree with the authority's determination in full. We will follow the penalty as soon as the timing and wording are determined."
