The public service broadcaster was found to have committed a "major breach" of broadcasting rules by failing to disclose that the narrator of a film about Gaza was the offspring of a Hamas administrator, as ruled by UK media regulator Ofcom.
An investigation by the media regulator into the documentary titled Gaza: How to Survive a Warzone has determined that the programme was "substantially inaccurate".
The head of the BBC had previously apologised, noting there had been "a major oversight in relation to factual correctness".
Ofcom has directed the broadcaster to broadcast a peak-time announcement about its findings.
"As this represents a major infringement of our code, we are directing the BBC to transmit a announcement of our determinations against it on BBC2 at nine o'clock in the evening, with a schedule to be determined," the regulator stated.
'Risk to Undermine Confidence'
The regulator's announcement said: "Our probe found that the documentary's lack of disclosure that the presenter's parent held a role in the Hamas-run government was substantially inaccurate.
"It meant that the public did not have essential details which may have been extremely pertinent to their evaluation of the presenter and the details he presented.
"Credibility is at the center of the relationship between a broadcaster and its public, particularly for a public service broadcaster such as the public broadcaster.
"This error had the possibility to erode the exceptionally strong amounts of confidence that audiences would have invested in a documentary produced by the BBC about the Gaza conflict."
The film was pulled from the BBC's streaming service in February after the narrator's familial connections came to light, and in July an internal BBC review found it infringed the corporation's journalistic standards on factual correctness.
A representative for the broadcaster said: "The Ofcom ruling is in accordance with the results of the corporation's inquiry, that there was a serious error in the programme in relation to the broadcaster's journalistic policies on accuracy, which corresponds to clause 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we accept the regulator's ruling in its entirety. We will comply with the penalty as soon as the date and wording are confirmed."
