The British broadcaster committed a "major breach" of broadcasting rules by omitting to mention that the narrator of a documentary about the Gaza situation was the offspring of a Hamas administrator, as ruled by UK media regulator Ofcom.
An inquiry by Ofcom into Gaza: How to Survive a Warzone has determined that the programme was "substantially inaccurate".
The BBC's director general had previously apologised, saying there had been "a serious error in relation to factual correctness".
The authority has instructed the BBC to broadcast a evening statement about its conclusions.
"As this represents a significant violation of our code, we are directing the BBC to broadcast a statement of our findings against it on the BBC's second channel at 9pm, with a timing to be confirmed," it said.
'Risk to Undermine Trust'
The regulator's report declared: "Our investigation determined that the film's omission to reveal that the voice's father served in a role in the Hamas-run authority was significantly deceptive.
"It meant that the public did not have essential details which may have been very significant to their evaluation of the voice and the details he shared.
"Trust is at the heart of the relationship between a broadcaster and its public, notably for a national broadcasting corporation such as the public broadcaster.
"This failing had the risk to undermine the very considerable amounts of credibility that viewers would have invested in a documentary produced by the BBC about the conflict in Gaza."
The documentary was withdrawn from the BBC's streaming service in February after the narrator's personal associations emerged, and in the month of July an broadcaster's internal assessment concluded it infringed the organization's editorial guidelines on truthfulness.
A representative for the broadcaster stated: "The Ofcom ruling is in line with the findings of the internal assessment, that there was a major oversight in the film in relation to the broadcaster's journalistic policies on truthfulness, which corresponds to regulation 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we agree with the regulator's ruling in complete. We will adhere to the directive as soon as the schedule and wording are confirmed."
