The public service broadcaster engaged in a "major breach" of industry standards by failing to disclose that the voice of a film about the Gaza situation was the child of a Hamas administrator, as ruled by UK media regulator Ofcom.
An investigation by Ofcom into the documentary titled Gaza: How to Survive a Warzone has determined that the film was "substantially inaccurate".
The BBC's director general had earlier expressed regret, stating there had been "a serious error in relation to accuracy".
The regulator has ordered the BBC to transmit a prime-time announcement about its decisions.
"As this represents a significant violation of our rules, we are directing the BBC to transmit a announcement of our determinations against it on BBC2 at 9pm, with a date to be finalised," the regulator stated.
'Potential to Erode Trust'
The authority's announcement stated: "Our probe found that the documentary's omission to reveal that the voice's male guardian held a role in the Hamas-administered authority was materially misleading.
"Consequently that the audience did not have vital facts which may have been highly relevant to their assessment of the voice and the details he shared.
"Trust is at the heart of the connection between a television network and its audience, particularly for a public service broadcaster such as the British Broadcasting Corporation.
"This oversight had the risk to damage the significantly high amounts of credibility that viewers would have put in a factual film from the broadcaster about the Gaza conflict."
The film was pulled from the online platform in last February after the narrator's family links came to light, and in July an internal BBC review determined it violated the corporation's editorial guidelines on truthfulness.
A corporation official said: "The authority's determination is in line with the findings of the corporation's inquiry, that there was a significant failing in the documentary in relation to the corporation's content standards on factual correctness, which aligns with Rule 2.2 of Ofcom's Broadcasting Code.
"We expressed regret for this and we comply with the regulator's ruling in complete. We will adhere to the directive as soon as the schedule and wording are confirmed."
