The British broadcaster was found to have committed a "serious breach" of media regulations by omitting to mention that the narrator of a film about Gaza was the son of a Hamas administrator, as determined by UK media regulator Ofcom.
An probe by the media regulator into the programme Gaza: How to Survive a Warzone has concluded that the film was "materially misleading".
The BBC's director general had earlier expressed regret, noting there had been "a significant failing in relation to truthfulness".
The authority has instructed the BBC to broadcast a evening announcement about its decisions.
"Since this amounts to a significant violation of our code, we are ordering the corporation to transmit a statement of our conclusions against it on BBC Two at 21:00, with a timing to be finalised," it said.
'Possibility to Undermine Trust'
The regulator's report stated: "Our investigation determined that the programme's omission to reveal that the narrator's parent served in a position in the Hamas-administered authority was materially misleading.
"It meant that the audience did not have essential details which may have been very significant to their evaluation of the voice and the information he presented.
"Confidence is at the core of the relationship between a broadcaster and its public, especially for a national broadcasting corporation such as the BBC.
"This failing had the risk to erode the exceptionally strong levels of trust that viewers would have put in a factual film from the broadcaster about the Gaza conflict."
The documentary was removed from the BBC's streaming service in the month of February after the narrator's family links came to light, and in this past July an broadcaster's internal assessment determined it violated the organization's editorial guidelines on truthfulness.
A corporation official commented: "The Ofcom ruling is in accordance with the findings of the corporation's inquiry, that there was a serious error in the documentary in relation to the corporation's content standards on factual correctness, which corresponds to clause 2.2 of Ofcom's Broadcasting Code.
"We expressed regret for this and we comply with the regulator's ruling in complete. We will adhere to the directive as soon as the timing and wording are finalised."
