The British broadcaster engaged in a "major breach" of industry standards by not revealing that the voice of a programme about the Gaza conflict was the son of a Hamas administrator, according to UK media regulator Ofcom.
An inquiry by Ofcom into the documentary titled Gaza: How to Survive a Warzone has determined that the film was "materially misleading".
The head of the BBC had previously apologised, noting there had been "a major oversight in relation to truthfulness".
The authority has ordered the broadcaster to air a prime-time statement about its decisions.
"As this represents a major infringement of our rules, we are ordering the BBC to transmit a statement of our determinations against it on BBC2 at nine o'clock in the evening, with a date to be finalised," it said.
'Potential to Undermine Trust'
The authority's statement declared: "Our investigation found that the film's lack of disclosure that the voice's father occupied a post in the Hamas-controlled government was significantly deceptive.
"This implied that the audience did not have critical information which may have been highly relevant to their judgment of the voice and the content he shared.
"Confidence is at the heart of the relationship between a television network and its viewers, notably for a national broadcasting corporation such as the public broadcaster.
"This error had the possibility to damage the exceptionally strong levels of credibility that viewers would have invested in a factual film from the broadcaster about the Israel-Gaza war."
The film was removed from the online platform in February after the presenter's personal associations were revealed, and in July an broadcaster's internal assessment concluded it infringed the broadcaster's content policies on truthfulness.
A representative for the broadcaster said: "The regulator's decision is in accordance with the findings of the corporation's inquiry, that there was a significant failing in the programme in relation to the corporation's content standards on factual correctness, which corresponds to regulation 2.2 of the regulator's media standards.
"We expressed regret for this and we accept the authority's determination in full. We will follow the penalty as soon as the date and wording are finalised."
