The BBC was found to have committed a "major breach" of broadcasting rules by not revealing that the presenter of a programme about the Gaza situation was the offspring of a Hamas administrator, according to UK media regulator Ofcom.
An inquiry by the broadcasting watchdog into Gaza: How to Survive a Warzone has concluded that the film was "materially misleading".
The head of the BBC had already issued an apology, noting there had been "a major oversight in relation to truthfulness".
The regulator has instructed the corporation to transmit a evening statement about its findings.
"Given this constitutes a major infringement of our rules, we are directing the broadcaster to transmit a announcement of our findings against it on BBC Two at 21:00, with a schedule to be determined," the statement read.
'Risk to Undermine Trust'
The regulator's report said: "Our investigation concluded that the film's lack of disclosure that the voice's parent held a position in the Hamas-administered administration was significantly deceptive.
"This implied that the public did not have vital facts which may have been highly relevant to their evaluation of the voice and the information he shared.
"Confidence is at the core of the bond between a television network and its viewers, notably for a national broadcasting corporation such as the British Broadcasting Corporation.
"This failing had the possibility to erode the exceptionally strong amounts of confidence that the public would have invested in a BBC factual programme about the conflict in Gaza."
The documentary was withdrawn from the BBC's streaming service in last February after the boy's familial connections came to light, and in July an broadcaster's internal assessment determined it breached the broadcaster's editorial guidelines on accuracy.
A corporation official stated: "The authority's determination is in line with the findings of Peter Johnston's review, that there was a significant failing in the programme in relation to the broadcaster's journalistic policies on factual correctness, which reflects Rule 2.2 of Ofcom's Broadcasting Code.
"We expressed regret for this and we accept the regulator's ruling in its entirety. We will comply with the directive as soon as the schedule and wording are determined."
