The BBC was found to have committed a "major breach" of media regulations by not revealing that the voice of a film about Gaza was the offspring of a Hamas official, according to UK media regulator Ofcom.
An investigation by the media regulator into Gaza: How to Survive a Warzone has concluded that the film was "substantially inaccurate".
The chief executive of the broadcaster had previously apologised, saying there had been "a major oversight in relation to accuracy".
Ofcom has instructed the BBC to transmit a evening declaration about its conclusions.
"Since this amounts to a major infringement of our rules, we are instructing the BBC to transmit a message of our conclusions against it on BBC2 at 21:00, with a date to be confirmed," the regulator stated.
'Risk to Undermine Credibility'
The regulator's announcement stated: "Our investigation determined that the film's omission to reveal that the narrator's father held a position in the Hamas-run government was materially misleading.
"This implied that the viewers did not have essential details which may have been very significant to their judgment of the narrator and the details he presented.
"Credibility is at the heart of the connection between a television network and its viewers, especially for a national broadcasting corporation such as the British Broadcasting Corporation.
"This error had the risk to damage the very considerable degrees of trust that audiences would have invested in a factual film from the broadcaster about the Gaza conflict."
The film was withdrawn from the online platform in the month of February after the boy's personal associations emerged, and in this past July an broadcaster's internal assessment found it violated the broadcaster's journalistic standards on factual correctness.
A BBC spokesperson stated: "The Ofcom ruling is in agreement with the conclusions of Peter Johnston's review, that there was a significant failing in the film in relation to the broadcaster's journalistic policies on truthfulness, which aligns with regulation 2.2 of the authority's broadcasting regulations.
"We have apologised for this and we comply with the authority's determination in full. We will follow the penalty as soon as the timing and language are finalised."
