The British broadcaster engaged in a "significant breach" of broadcasting rules by not revealing that the voice of a programme about the Gaza situation was the child of a Hamas administrator, as ruled by regulatory body Ofcom.
An probe by the media regulator into the documentary titled Gaza: How to Survive a Warzone has found that the programme was "substantially inaccurate".
The chief executive of the broadcaster had already issued an apology, noting there had been "a significant failing in relation to truthfulness".
The authority has instructed the corporation to broadcast a prime-time statement about its findings.
"Given this constitutes a significant violation of our code, we are directing the BBC to transmit a announcement of our determinations against it on BBC2 at 9pm, with a timing to be confirmed," the statement read.
'Potential to Erode Confidence'
The regulator's statement said: "Our probe determined that the documentary's failure to disclose that the presenter's male guardian served in a role in the Hamas-administered government was significantly deceptive.
"This implied that the public did not have vital facts which may have been highly relevant to their assessment of the voice and the content he provided.
"Credibility is at the heart of the bond between a broadcaster and its audience, particularly for a state-funded media outlet such as the British Broadcasting Corporation.
"This error had the risk to damage the significantly high amounts of credibility that viewers would have invested 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 familial connections were revealed, and in this past July an internal BBC review found it infringed the corporation's journalistic standards on accuracy.
A representative for the broadcaster commented: "The regulator's decision is in line with the findings of Peter Johnston's review, that there was a significant failing in the programme in relation to the corporation's content standards on accuracy, which reflects regulation 2.2 of the regulator's media standards.
"We expressed regret for this and we accept Ofcom's decision in its entirety. We will adhere to the penalty as soon as the schedule and language are confirmed."
