The BBC was found to have committed a "major breach" of media regulations by omitting to mention that the narrator of a film about the Gaza conflict was the offspring of a Hamas official, as ruled by regulatory body Ofcom.
An investigation by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has determined that the film was "significantly deceptive".
The chief executive of the broadcaster had earlier expressed regret, noting there had been "a major oversight in relation to factual correctness".
The regulator has directed the corporation to air a evening announcement about its findings.
"As this represents a significant violation of our code, we are directing the corporation to broadcast a announcement of our conclusions against it on BBC2 at 21:00, with a schedule to be confirmed," the statement read.
'Potential to Damage Trust'
The authority's statement stated: "Our probe concluded that the film's failure to disclose that the narrator's male guardian served in a position in the Hamas-administered government was materially misleading.
"This implied that the public did not have vital facts which may have been very significant to their judgment of the presenter and the details he provided.
"Trust is at the heart of the relationship between a television network and its viewers, notably for a public service broadcaster such as the BBC.
"This failing had the risk to undermine the significantly high amounts of credibility that the public would have invested in a documentary produced by the BBC about the conflict in Gaza."
The film was removed from the online platform in the month of February after the narrator's family links were revealed, and in the month of July an corporation's own inquiry determined it violated the broadcaster's journalistic standards on truthfulness.
A representative for the broadcaster said: "The regulator's decision is in accordance with the findings of the internal assessment, that there was a major oversight in the documentary in relation to the corporation's content standards on accuracy, which reflects regulation 2.2 of the authority's broadcasting regulations.
"We issued an apology for this and we accept the authority's determination in its entirety. We will comply with the directive as soon as the timing and wording are determined."
