The British broadcaster was found to have committed a "significant breach" of industry standards by omitting to mention that the presenter of a film about the Gaza situation was the child of a Hamas official, according to UK media regulator Ofcom.
An investigation by the media regulator into the programme Gaza: How to Survive a Warzone has determined that the film was "substantially inaccurate".
The head of the BBC had previously apologised, saying there had been "a major oversight in relation to accuracy".
The authority has instructed the broadcaster to transmit a evening statement about its findings.
"As this represents a serious breach of our regulations, we are instructing the corporation to broadcast a message of our findings against it on the BBC's second channel at 21:00, with a timing to be finalised," it said.
'Potential to Undermine Credibility'
The regulator's announcement declared: "Our probe found that the film's lack of disclosure that the narrator's male guardian served in a role in the Hamas-run authority was materially misleading.
"It meant that the viewers did not have vital facts which may have been very significant to their evaluation of the voice and the content he presented.
"Credibility is at the core of the bond between a broadcaster and its audience, notably for a state-funded media outlet such as the British Broadcasting Corporation.
"This failing had the possibility to damage the exceptionally strong degrees of confidence that the public would have invested in a BBC factual programme about the Gaza conflict."
The film was withdrawn from the BBC's streaming service in the month of February after the boy's familial connections were revealed, and in the month of July an broadcaster's internal assessment found it breached the corporation's editorial guidelines on factual correctness.
A corporation official said: "The Ofcom ruling is in line with the findings of the internal assessment, that there was a serious error in the documentary in relation to the broadcaster's journalistic policies on truthfulness, which reflects Rule 2.2 of Ofcom's Broadcasting Code.
"We have apologised for this and we accept Ofcom's decision in its entirety. We will adhere to the directive as soon as the schedule and language are finalised."
