The public service broadcaster was found to have committed a "serious breach" of media regulations by not revealing that the voice of a programme about the Gaza situation was the offspring of a Hamas administrator, as ruled by regulatory body Ofcom.
An probe by Ofcom into the programme Gaza: How to Survive a Warzone has found that the documentary was "materially misleading".
The chief executive of the broadcaster had earlier expressed regret, stating there had been "a serious error in relation to accuracy".
The regulator has instructed the BBC to broadcast a prime-time announcement about its conclusions.
"Given this constitutes a significant violation of our rules, we are ordering the broadcaster to broadcast a announcement of our conclusions against it on BBC2 at 9pm, with a schedule to be determined," the regulator stated.
'Possibility to Damage Trust'
The regulator's announcement said: "Our probe found that the documentary's omission to reveal that the narrator's father held a post in the Hamas-run government was significantly deceptive.
"It meant that the public did not have essential details which may have been very significant to their judgment of the narrator and the content he presented.
"Confidence is at the center of the relationship between a television network and its viewers, notably for a state-funded media outlet such as the public broadcaster.
"This failing had the possibility to undermine the very considerable degrees of confidence that the public would have invested in a documentary produced by the BBC about the conflict in Gaza."
The programme was pulled from the online platform in last February after the boy's familial connections came to light, and in the month of July an internal BBC review determined it infringed the corporation's journalistic standards on accuracy.
A corporation official said: "The regulator's decision is in accordance with the findings of the internal assessment, that there was a major oversight in the documentary in relation to the corporation's content standards on factual correctness, which aligns with clause 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we agree with the regulator's ruling in complete. We will adhere to the directive as soon as the schedule and wording are confirmed."
