The British broadcaster committed a "significant breach" of media regulations by failing to disclose that the voice of a film about the Gaza situation was the child of a Hamas official, as determined by UK media regulator Ofcom.
An investigation by Ofcom into Gaza: How to Survive a Warzone has concluded that the film was "significantly deceptive".
The chief executive of the broadcaster had previously apologised, saying there had been "a significant failing in relation to factual correctness".
The regulator has ordered the corporation to air a evening announcement about its decisions.
"As this represents a major infringement of our regulations, we are directing the BBC to air a statement of our conclusions against it on the BBC's second channel at 21:00, with a schedule to be finalised," the regulator stated.
'Risk to Damage Trust'
The watchdog's statement stated: "Our probe found that the film's omission to reveal that the narrator's parent served in a post in the Hamas-administered authority was significantly deceptive.
"This implied that the public did not have critical information which may have been extremely pertinent to their evaluation of the voice and the details he presented.
"Credibility is at the center of the relationship between a broadcaster and its viewers, particularly for a national broadcasting corporation such as the British Broadcasting Corporation.
"This failing had the possibility to erode the significantly high levels of confidence that viewers would have invested in a documentary produced by the BBC about the Israel-Gaza war."
The programme was pulled from iPlayer in last February after the narrator's personal associations came to light, and in July an internal BBC review found it breached the broadcaster's content policies on truthfulness.
A corporation official commented: "The Ofcom ruling is in accordance with the results of the corporation's inquiry, that there was a serious error in the programme in relation to the BBC's Editorial Guidelines on accuracy, which corresponds to clause 2.2 of Ofcom's Broadcasting Code.
"We expressed regret for this and we accept Ofcom's decision in its entirety. We will comply with the directive as soon as the date and wording are finalised."
