The public service broadcaster was found to have committed a "significant breach" of broadcasting rules by not revealing that the narrator of a film about Gaza was the offspring of a Hamas official, according to UK media regulator Ofcom.
An investigation by Ofcom into the documentary titled Gaza: How to Survive a Warzone has found that the film was "significantly deceptive".
The BBC's director general had previously apologised, stating there had been "a significant failing in relation to factual correctness".
Ofcom has instructed the broadcaster to air a peak-time announcement about its decisions.
"Given this constitutes a significant violation of our code, we are ordering the BBC to air a statement of our conclusions against it on the BBC's second channel at 21:00, with a timing to be confirmed," the regulator stated.
'Risk to Undermine Trust'
The watchdog's announcement declared: "Our probe found that the documentary's lack of disclosure that the voice's male guardian served in a post in the Hamas-administered government was significantly deceptive.
"This implied that the viewers did not have critical information which may have been very significant to their assessment of the presenter and the details he presented.
"Confidence is at the heart of the relationship between a broadcaster and its viewers, notably for a national broadcasting corporation such as the British Broadcasting Corporation.
"This error had the risk to undermine the significantly high levels of trust that viewers would have invested in a factual film from the broadcaster about the conflict in Gaza."
The programme was pulled from the BBC's streaming service in February after the boy's familial connections came to light, and in the month of July an internal BBC review found it violated the organization's journalistic standards on accuracy.
A corporation official commented: "The Ofcom ruling is in accordance with the findings of the internal assessment, that there was a significant failing in the programme in relation to the BBC's Editorial Guidelines on accuracy, which aligns with regulation 2.2 of Ofcom's Broadcasting Code.
"We expressed regret for this and we agree with the authority's determination in its entirety. We will follow the sanction as soon as the date and language are confirmed."