The British broadcaster was found to have committed a "significant breach" of broadcasting rules by not revealing that the voice of a programme about the Gaza conflict was the child of a Hamas official, as determined by regulatory body Ofcom.
An probe by Ofcom into the programme Gaza: How to Survive a Warzone has found that the programme was "significantly deceptive".
The head of the BBC had previously apologised, noting there had been "a significant failing in relation to truthfulness".
The regulator has directed the BBC to transmit a prime-time statement about its findings.
"Since this amounts to a significant violation of our code, we are directing the corporation to transmit a announcement of our findings against it on BBC2 at 9pm, with a date to be confirmed," the statement read.
'Possibility to Undermine Confidence'
The watchdog's report said: "The inquiry we conducted concluded that the programme's lack of disclosure that the voice's father held a position in the Hamas-run authority was materially misleading.
"It meant that the audience did not have critical information which may have been very significant to their judgment of the voice and the details he provided.
"Confidence is at the heart of the connection between a media organization and its viewers, particularly for a public service broadcaster such as the British Broadcasting Corporation.
"This failing had the potential to erode the significantly high levels of trust that viewers would have invested in a BBC factual programme about the conflict in Gaza."
The film was withdrawn from iPlayer in last February after the boy's family links were revealed, and in the month of July an broadcaster's internal assessment determined it breached the corporation's editorial guidelines on truthfulness.
A corporation official commented: "The regulator's decision is in agreement with the findings of Peter Johnston's review, that there was a significant failing in the programme in relation to the BBC's Editorial Guidelines on truthfulness, which corresponds to clause 2.2 of the authority's broadcasting regulations.
"We issued an apology for this and we agree with the regulator's ruling in its entirety. We will follow the penalty as soon as the timing and wording are determined."
