The public service broadcaster was found to have committed a "serious breach" of industry standards by not revealing that the voice of a documentary about the Gaza situation was the child of a Hamas representative, as ruled by regulatory body Ofcom.
An inquiry by Ofcom into the documentary titled Gaza: How to Survive a Warzone has found that the film was "significantly deceptive".
The chief executive of the broadcaster had previously apologised, noting there had been "a significant failing in relation to factual correctness".
The authority has directed the corporation to broadcast a prime-time announcement about its findings.
"Given this constitutes a significant violation of our regulations, we are directing the broadcaster to air a message of our findings against it on BBC2 at 9pm, with a schedule to be confirmed," the regulator stated.
'Possibility to Undermine Confidence'
The watchdog's report stated: "Our probe determined that the film's failure to disclose that the voice's parent held a role in the Hamas-administered authority was materially misleading.
"It meant that the public did not have essential details which may have been extremely pertinent to their assessment of the narrator and the content he presented.
"Confidence is at the heart of the relationship between a broadcaster and its viewers, particularly for a public service broadcaster such as the BBC.
"This oversight had the risk to undermine the exceptionally strong amounts of trust that the public would have put in a documentary produced by the BBC about the Israel-Gaza war."
The programme was withdrawn from the online platform in last February after the boy's familial connections were revealed, and in this past July an broadcaster's internal assessment found it breached the corporation's content policies on factual correctness.
A corporation official commented: "The regulator's decision is in agreement with the findings of the internal assessment, that there was a serious error in the documentary in relation to the broadcaster's journalistic policies on truthfulness, which corresponds to Rule 2.2 of Ofcom's Broadcasting Code.
"We have apologised for this and we comply with the authority's determination in full. We will adhere to the sanction as soon as the schedule and language are confirmed."
