The British broadcaster committed a "serious breach" of industry standards by not revealing that the presenter of a documentary about the Gaza situation was the son of a Hamas representative, as determined by British broadcasting authority Ofcom.
An inquiry by the media regulator into Gaza: How to Survive a Warzone has found that the documentary was "substantially inaccurate".
The head of the BBC had previously apologised, saying there had been "a serious error in relation to factual correctness".
The authority has ordered the broadcaster to broadcast a evening announcement about its decisions.
"Since this amounts to a serious breach of our regulations, we are directing the BBC to transmit a message of our determinations against it on BBC Two at 21:00, with a schedule to be determined," the statement read.
'Risk to Erode Credibility'
The authority's announcement declared: "Our probe determined that the programme's omission to reveal that the narrator's father occupied a role in the Hamas-run authority was significantly deceptive.
"It meant that the public did not have essential details which may have been extremely pertinent to their judgment of the voice and the details he presented.
"Confidence is at the heart of the connection between a television network and its viewers, notably for a national broadcasting corporation such as the British Broadcasting Corporation.
"This failing had the risk to undermine the very considerable levels of credibility that audiences would have put in a factual film from the broadcaster about the Israel-Gaza war."
The documentary was withdrawn from the online platform in the month of February after the presenter's personal associations came to light, and in the month of July an broadcaster's internal assessment found it violated the corporation's content policies on factual correctness.
A representative for the broadcaster stated: "The Ofcom ruling is in accordance with the findings of the internal assessment, that there was a serious error in the film in relation to the broadcaster's journalistic policies on truthfulness, which aligns with regulation 2.2 of Ofcom's Broadcasting Code.
"We have apologised for this and we accept the regulator's ruling in full. We will follow the directive as soon as the schedule and wording are confirmed."
