The British broadcaster engaged in a "significant breach" of media regulations by omitting to mention that the presenter of a film about Gaza was the son of a Hamas administrator, as determined by British broadcasting authority Ofcom.
An inquiry by the media regulator into Gaza: How to Survive a Warzone has concluded that the programme was "significantly deceptive".
The BBC's director general had earlier expressed regret, noting there had been "a major oversight in relation to accuracy".
Ofcom has ordered the corporation to broadcast a evening announcement about its conclusions.
"Since this amounts to a major infringement of our regulations, we are directing the BBC to broadcast a message of our findings against it on BBC2 at 9pm, with a date to be determined," the regulator stated.
'Risk to Erode Credibility'
The watchdog's statement said: "Our investigation found that the programme's omission to reveal that the narrator's father served in a position in the Hamas-controlled government was substantially inaccurate.
"It meant that the audience did not have vital facts which may have been highly relevant to their evaluation of the presenter and the content he shared.
"Credibility is at the heart of the bond between a broadcaster and its public, notably for a national broadcasting corporation such as the BBC.
"This failing had the possibility to undermine the very considerable degrees of credibility that audiences would have invested in a factual film from the broadcaster about the Israel-Gaza war."
The film was pulled from the BBC's streaming service in the month of February after the narrator's familial connections were revealed, and in July an corporation's own inquiry concluded it breached the organization's content policies on factual correctness.
A BBC spokesperson stated: "The Ofcom ruling is in line with the conclusions of the corporation's inquiry, that there was a major oversight in the programme in relation to the BBC's Editorial Guidelines on factual correctness, which reflects Rule 2.2 of the regulator's media standards.
"We issued an apology for this and we comply with Ofcom's decision in full. We will adhere to the directive as soon as the date and language are confirmed."
