The BBC engaged in a "serious breach" of broadcasting rules by failing to disclose that the voice of a documentary about Gaza was the son of a Hamas representative, as determined by regulatory body Ofcom.
An inquiry by the media regulator into the documentary titled Gaza: How to Survive a Warzone has determined that the documentary was "substantially inaccurate".
The head of the BBC had already issued an apology, stating there had been "a serious error in relation to accuracy".
The regulator has directed the BBC to transmit a peak-time announcement about its conclusions.
"Since this amounts to a serious breach of our rules, we are directing the BBC to air a statement of our determinations against it on BBC Two at nine o'clock in the evening, with a timing to be finalised," it said.
'Risk to Erode Trust'
The watchdog's report said: "Our probe determined that the film's omission to reveal that the presenter's father occupied a position in the Hamas-controlled administration was significantly deceptive.
"It meant that the audience did not have critical information which may have been highly relevant to their judgment of the narrator and the information he presented.
"Confidence is at the heart of the bond between a media organization and its audience, especially for a national broadcasting corporation such as the BBC.
"This oversight had the risk to erode the exceptionally strong amounts of trust that the public would have invested in a BBC factual programme about the Gaza conflict."
The film was pulled from the online platform in the month of February after the boy's familial connections were revealed, and in the month of July an corporation's own inquiry determined it infringed the corporation's content policies on accuracy.
A BBC spokesperson commented: "The authority's determination is in accordance with the results of Peter Johnston's review, that there was a significant failing in the programme 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 agree with Ofcom's decision in its entirety. We will comply with the directive as soon as the timing and wording are confirmed."
