The public service broadcaster committed a "significant breach" of media regulations by failing to disclose that the voice of a documentary about Gaza was the offspring of a Hamas official, according to UK media regulator Ofcom.
An inquiry by the media regulator into the documentary titled Gaza: How to Survive a Warzone has determined that the documentary was "significantly deceptive".
The chief executive of the broadcaster had earlier expressed regret, saying there had been "a serious error in relation to factual correctness".
The regulator has directed the corporation to transmit a prime-time statement about its conclusions.
"Given this constitutes a major infringement of our regulations, we are instructing the corporation to air a statement of our conclusions against it on the BBC's second channel at 21:00, with a date to be confirmed," it said.
'Potential to Erode Trust'
The regulator's statement said: "The inquiry we conducted determined that the film's failure to disclose that the presenter's male guardian served in a role in the Hamas-controlled authority was substantially inaccurate.
"This implied that the audience did not have critical information which may have been very significant to their evaluation of the voice and the details he provided.
"Credibility is at the heart of the bond between a television network and its audience, particularly for a public service broadcaster such as the public broadcaster.
"This error had the possibility to erode the significantly high levels of confidence that audiences would have put in a factual film from the broadcaster about the Gaza conflict."
The programme was removed from the BBC's streaming service in February after the narrator's familial connections emerged, and in this past July an internal BBC review found it violated the organization's journalistic standards on truthfulness.
A BBC spokesperson commented: "The authority's determination is in accordance with the findings of the corporation's inquiry, that there was a major oversight in the documentary in relation to the broadcaster's journalistic policies on accuracy, which aligns with regulation 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we agree with the regulator's ruling in full. We will comply with the sanction as soon as the timing and wording are confirmed."
