The public service broadcaster was found to have committed a "major breach" of industry standards by failing to disclose that the narrator of a film about Gaza was the offspring of a Hamas official, as determined by UK media regulator Ofcom.
An inquiry by Ofcom into the programme Gaza: How to Survive a Warzone has concluded that the documentary was "materially misleading".
The head of the BBC had earlier expressed regret, saying there had been "a major oversight in relation to factual correctness".
The regulator has ordered the corporation to transmit a prime-time statement about its conclusions.
"Since this amounts to a serious breach of our regulations, we are directing the BBC to air a message of our determinations against it on the BBC's second channel at nine o'clock in the evening, with a schedule to be finalised," the statement read.
'Possibility to Erode Trust'
The regulator's statement declared: "Our investigation concluded that the film's omission to reveal that the voice's parent served in a post in the Hamas-run authority was significantly deceptive.
"Consequently that the audience did not have critical information which may have been extremely pertinent to their assessment of the voice and the information he shared.
"Trust is at the center of the bond between a television network and its viewers, particularly for a public service broadcaster such as the British Broadcasting Corporation.
"This oversight had the potential to undermine the exceptionally strong amounts of credibility that viewers would have placed in a factual film from the broadcaster about the conflict in Gaza."
The documentary was withdrawn from the BBC's streaming service in February after the boy's personal associations came to light, and in this past July an broadcaster's internal assessment determined it violated the broadcaster's editorial guidelines on accuracy.
A corporation official commented: "The Ofcom ruling is in accordance with the findings of the corporation's inquiry, that there was a major oversight in the programme in relation to the BBC's Editorial Guidelines on factual correctness, which corresponds to regulation 2.2 of Ofcom's Broadcasting Code.
"We issued an apology for this and we agree with Ofcom's decision in full. We will follow the sanction as soon as the date and language are confirmed."
