The British broadcaster engaged in a "significant breach" of industry standards by failing to disclose that the voice of a programme about the Gaza situation was the son of a Hamas administrator, according to UK media regulator Ofcom.
An probe by the broadcasting watchdog into Gaza: How to Survive a Warzone has found that the programme was "significantly deceptive".
The head of the BBC had previously apologised, stating there had been "a major oversight in relation to accuracy".
The authority has directed the broadcaster to transmit a evening statement about its decisions.
"Since this amounts to a significant violation of our rules, we are instructing the corporation to transmit a message of our determinations against it on BBC2 at nine o'clock in the evening, with a schedule to be determined," it said.
'Possibility to Damage Trust'
The watchdog's statement declared: "The inquiry we conducted concluded that the programme's omission to reveal that the presenter's father served in a role in the Hamas-run administration was substantially inaccurate.
"This implied that the audience did not have critical information which may have been very significant to their assessment of the voice and the information he shared.
"Credibility is at the heart of the relationship between a media organization and its audience, especially for a public service broadcaster such as the public broadcaster.
"This error had the potential to erode the exceptionally strong amounts of trust that viewers would have invested in a factual film from the broadcaster about the Gaza conflict."
The documentary was withdrawn from the online platform in February after the boy's family links emerged, and in July an broadcaster's internal assessment determined it violated the corporation's journalistic standards on truthfulness.
A representative for the broadcaster said: "The authority's determination is in line with the findings of the internal assessment, that there was a serious error in the film in relation to the corporation's content standards on factual correctness, which aligns with Rule 2.2 of Ofcom's Broadcasting Code.
"We have apologised for this and we comply with the authority's determination in complete. We will follow the directive as soon as the date and language are determined."
