The British broadcaster was found to have committed a "significant breach" of media regulations by omitting to mention that the voice of a film about the Gaza conflict was the child of a Hamas official, as ruled by regulatory body Ofcom.
An probe by Ofcom into the programme Gaza: How to Survive a Warzone has determined that the film was "significantly deceptive".
The head of the BBC had earlier expressed regret, saying there had been "a major oversight in relation to truthfulness".
Ofcom has instructed the BBC to air a evening declaration about its conclusions.
"Since this amounts to a major infringement of our code, we are directing the corporation to broadcast a statement of our conclusions against it on the BBC's second channel at 9pm, with a date to be determined," the statement read.
'Potential to Damage Credibility'
The regulator's report said: "The inquiry we conducted found that the film's failure to disclose that the narrator's father occupied a position in the Hamas-run administration was materially misleading.
"This implied that the public did not have vital facts which may have been extremely pertinent to their evaluation of the voice and the information he provided.
"Confidence is at the center of the bond between a media organization and its public, notably for a public service broadcaster such as the British Broadcasting Corporation.
"This error had the potential to damage the very considerable degrees of confidence that viewers would have put in a factual film from the broadcaster about the Israel-Gaza war."
The documentary was pulled from iPlayer in last February after the boy's personal associations emerged, and in the month of July an broadcaster's internal assessment determined it violated the organization's journalistic standards 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 film in relation to the broadcaster's journalistic policies on truthfulness, which aligns with Rule 2.2 of the authority's broadcasting regulations.
"We have apologised for this and we agree with Ofcom's decision in its entirety. We will follow the directive as soon as the date and wording are determined."
