The public service broadcaster engaged in a "major breach" of broadcasting rules by failing to disclose that the narrator of a programme about Gaza was the offspring of a Hamas representative, as ruled by UK media regulator Ofcom.
An inquiry by the media regulator into Gaza: How to Survive a Warzone has found that the documentary was "substantially inaccurate".
The head of the BBC had already issued an apology, noting there had been "a major oversight in relation to accuracy".
Ofcom has ordered the broadcaster to air a prime-time announcement about its decisions.
"Given this constitutes a serious breach of our regulations, we are ordering the BBC to air a announcement of our determinations against it on the BBC's second channel at 9pm, with a date to be determined," the statement read.
'Risk to Erode Trust'
The regulator's report declared: "Our probe determined that the programme's omission to reveal that the narrator's father served in a post in the Hamas-administered authority was significantly deceptive.
"It meant that the viewers did not have critical information which may have been extremely pertinent to their evaluation of the voice and the information he presented.
"Trust is at the core of the bond between a broadcaster and its audience, notably for a state-funded media outlet such as the British Broadcasting Corporation.
"This failing had the risk to damage the exceptionally strong levels of confidence that the public would have invested in a documentary produced by the BBC about the Gaza conflict."
The film was removed from the BBC's streaming service in last February after the narrator's personal associations came to light, and in the month of July an internal BBC review found it violated the organization's journalistic standards on truthfulness.
A representative for the broadcaster said: "The authority's determination is in accordance with the conclusions of Peter Johnston's review, 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 issued an apology for this and we accept the regulator's ruling in its entirety. We will comply with the directive as soon as the schedule and wording are confirmed."
