The BBC was found to have committed a "significant breach" of media regulations by failing to disclose that the presenter of a programme about the Gaza conflict was the son of a Hamas administrator, as determined by UK media regulator Ofcom.
An inquiry by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has determined that the documentary was "significantly deceptive".
The head of the BBC had previously apologised, noting there had been "a significant failing in relation to factual correctness".
Ofcom has directed the broadcaster to air a peak-time announcement about its conclusions.
"Given this constitutes a significant violation of our rules, we are instructing the BBC to air a message of our conclusions against it on BBC Two at nine o'clock in the evening, with a date to be confirmed," the statement read.
'Possibility to Undermine Trust'
The regulator's report declared: "Our investigation found that the film's lack of disclosure that the voice's father held a role in the Hamas-administered government was materially misleading.
"It meant that the viewers did not have critical information which may have been very significant to their assessment of the narrator and the content he shared.
"Confidence is at the heart of the connection between a broadcaster and its viewers, notably for a national broadcasting corporation such as the British Broadcasting Corporation.
"This failing had the potential to damage the very considerable amounts of credibility that viewers would have placed in a factual film from the broadcaster about the conflict in Gaza."
The documentary was removed from the BBC's streaming service in the month of February after the boy's family links emerged, and in July an broadcaster's internal assessment found it violated the corporation's content policies on accuracy.
A corporation official said: "The regulator's decision is in line 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 accuracy, which aligns with regulation 2.2 of Ofcom's Broadcasting Code.
"We have apologised for this and we agree with the authority's determination in complete. We will adhere to the sanction as soon as the date and wording are finalised."
