The British broadcaster was found to have committed a "serious breach" of media regulations by failing to disclose that the narrator of a documentary about the Gaza conflict was the child of a Hamas official, as ruled by UK media regulator Ofcom.
An inquiry by Ofcom into the programme Gaza: How to Survive a Warzone has concluded that the film was "significantly deceptive".
The BBC's director general had earlier expressed regret, noting there had been "a serious error in relation to accuracy".
The regulator has ordered the broadcaster to air a peak-time statement about its findings.
"As this represents a major infringement of our rules, we are directing the BBC to broadcast a announcement of our determinations against it on BBC Two at 9pm, with a date to be determined," the regulator stated.
'Risk to Undermine Trust'
The regulator's report said: "The inquiry we conducted found that the programme's failure to disclose that the narrator's father occupied a post in the Hamas-controlled administration was substantially inaccurate.
"Consequently that the audience did not have critical information which may have been highly relevant to their evaluation of the voice and the details he presented.
"Credibility is at the heart of the relationship between a television network and its audience, especially for a public service broadcaster such as the British Broadcasting Corporation.
"This error had the potential to erode the very considerable levels of credibility that the public would have placed in a BBC factual programme about the Gaza conflict."
The programme was withdrawn from the BBC's streaming service in last February after the narrator's familial connections emerged, and in this past July an internal BBC review determined it breached the broadcaster's content policies on accuracy.
A representative for the broadcaster stated: "The regulator's decision is in line with the results of the corporation's inquiry, that there was a serious error in the documentary in relation to the broadcaster's journalistic policies on truthfulness, which reflects Rule 2.2 of the authority's broadcasting regulations.
"We have apologised for this and we agree with the authority's determination in full. We will comply with the directive as soon as the schedule and wording are finalised."
