The BBC was found to have committed a "serious breach" of broadcasting rules by failing to disclose that the voice of a documentary about the Gaza situation was the child of a Hamas official, as determined by regulatory body Ofcom.
An probe by the media regulator into the programme Gaza: How to Survive a Warzone has found that the programme was "substantially inaccurate".
The head of the BBC had already issued an apology, stating there had been "a serious error in relation to factual correctness".
Ofcom has ordered the corporation to transmit a prime-time declaration about its findings.
"Given this constitutes a significant violation of our code, we are directing the BBC to broadcast a statement of our determinations against it on BBC Two at nine o'clock in the evening, with a date to be determined," the regulator stated.
'Potential to Erode Credibility'
The authority's report stated: "Our investigation found that the film's failure to disclose that the narrator's male guardian served in a position in the Hamas-controlled government was significantly deceptive.
"It meant that the viewers did not have essential details which may have been very significant to their judgment of the presenter and the content he presented.
"Credibility is at the heart of the relationship between a media organization and its audience, especially for a public service broadcaster such as the British Broadcasting Corporation.
"This failing had the potential to undermine the significantly high degrees of trust that the public would have put in a factual film from the broadcaster about the Gaza conflict."
The programme was pulled from the online platform in last February after the boy's personal associations emerged, and in July an corporation's own inquiry concluded it infringed the broadcaster's journalistic standards on factual correctness.
A representative for the broadcaster commented: "The regulator's decision is in accordance with the results of the internal assessment, that there was a major oversight in the documentary in relation to the broadcaster's journalistic policies on factual correctness, which reflects Rule 2.2 of the authority's broadcasting regulations.
"We have apologised for this and we comply with the regulator's ruling in complete. We will comply with the directive as soon as the timing and language are confirmed."
