The British broadcaster committed a "significant breach" of media regulations by not revealing that the voice of a film about the Gaza situation was the child of a Hamas administrator, as determined by regulatory body Ofcom.
An inquiry by the media regulator into the documentary titled Gaza: How to Survive a Warzone has found that the film was "substantially inaccurate".
The BBC's director general had earlier expressed regret, stating there had been "a major oversight in relation to accuracy".
Ofcom has instructed the corporation to broadcast a evening declaration about its conclusions.
"Since this amounts to a significant violation of our rules, we are instructing the BBC to transmit a statement of our conclusions against it on BBC Two at 21:00, with a schedule to be determined," the regulator stated.
'Possibility to Erode Credibility'
The authority's report said: "Our probe found that the documentary's failure to disclose that the voice's father occupied a post in the Hamas-controlled administration was materially misleading.
"This implied that the audience did not have critical information which may have been extremely pertinent to their evaluation of the voice and the content he shared.
"Confidence is at the heart of the bond between a broadcaster and its public, especially for a state-funded media outlet such as the British Broadcasting Corporation.
"This failing had the potential to undermine the exceptionally strong amounts of confidence that audiences would have put in a documentary produced by the BBC about the conflict in Gaza."
The film was removed from iPlayer in the month of February after the boy's personal associations emerged, and in the month of July an broadcaster's internal assessment found it breached the broadcaster's journalistic standards on factual correctness.
A representative for the broadcaster stated: "The authority's determination is in line with the conclusions of the corporation's inquiry, that there was a major oversight in the film in relation to the corporation's content standards on accuracy, which reflects Rule 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we agree with the regulator's ruling in its entirety. We will adhere to the penalty as soon as the schedule and wording are finalised."
