The British broadcaster committed a "serious breach" of broadcasting rules by failing to disclose that the presenter of a film about the Gaza situation was the offspring of a Hamas representative, as ruled by regulatory body Ofcom.
An investigation by the broadcasting watchdog into Gaza: How to Survive a Warzone has concluded that the documentary was "significantly deceptive".
The chief executive of the broadcaster had previously apologised, stating there had been "a serious error in relation to factual correctness".
The authority has ordered the BBC to air a peak-time declaration about its findings.
"Since this amounts to a major infringement of our rules, we are directing the BBC to broadcast a statement of our findings against it on BBC Two at 9pm, with a schedule to be determined," the statement read.
'Potential to Damage Credibility'
The watchdog's statement declared: "Our probe found that the film's omission to reveal that the narrator's male guardian occupied a position in the Hamas-run administration was materially misleading.
"This implied that the audience did not have critical information which may have been highly relevant to their assessment of the narrator and the details he presented.
"Trust is at the center of the connection between a television network and its public, particularly for a public service broadcaster such as the British Broadcasting Corporation.
"This oversight had the potential to erode the exceptionally strong amounts of credibility that viewers would have placed in a factual film from the broadcaster about the Gaza conflict."
The film was removed from the BBC's streaming service in February after the boy's personal associations emerged, and in the month of July an internal BBC review concluded it breached the broadcaster's editorial guidelines on accuracy.
A corporation official said: "The regulator's decision is in accordance with the results of Peter Johnston's review, that there was a major oversight in the programme in relation to the corporation's content standards on factual correctness, which aligns with Rule 2.2 of the regulator's media standards.
"We expressed regret for this and we accept the regulator's ruling in complete. We will adhere to the directive as soon as the timing and wording are confirmed."
