The British broadcaster was found to have committed a "significant breach" of broadcasting rules by omitting to mention that the narrator of a documentary about the Gaza conflict was the child of a Hamas administrator, as determined by British broadcasting authority Ofcom.
An inquiry by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has determined that the programme was "substantially inaccurate".
The chief executive of the broadcaster had previously apologised, stating there had been "a major oversight in relation to truthfulness".
The regulator has instructed the BBC to broadcast a evening announcement about its findings.
"Given this constitutes a significant violation of our code, we are instructing the corporation to air a message of our determinations against it on BBC2 at 9pm, with a date to be determined," the statement read.
'Potential to Erode Credibility'
The authority's report said: "Our probe determined that the film's omission to reveal that the narrator's parent occupied a position in the Hamas-run government was significantly deceptive.
"Consequently that the public did not have critical information which may have been extremely pertinent to their assessment of the voice and the content he shared.
"Trust is at the heart of the connection between a broadcaster and its audience, notably for a public service broadcaster such as the BBC.
"This failing had the possibility to damage the significantly high degrees of credibility that viewers would have placed in a BBC factual programme about the Israel-Gaza war."
The film was withdrawn from iPlayer in last February after the presenter's family links emerged, and in July an broadcaster's internal assessment found it breached the broadcaster's journalistic standards on accuracy.
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 broadcaster's journalistic policies on factual correctness, which corresponds to clause 2.2 of Ofcom's Broadcasting Code.
"We issued an apology for this and we accept Ofcom's decision in complete. We will adhere to the directive as soon as the date and language are confirmed."
