The British broadcaster was found to have committed a "serious breach" of media regulations by not revealing that the presenter of a programme about the Gaza conflict was the offspring of a Hamas official, according to British broadcasting authority Ofcom.
An probe by the broadcasting watchdog into Gaza: How to Survive a Warzone has concluded that the film was "substantially inaccurate".
The BBC's director general had earlier expressed regret, noting there had been "a major oversight in relation to accuracy".
Ofcom has instructed the corporation to air a peak-time declaration about its decisions.
"Given this constitutes a major infringement of our code, we are directing the broadcaster to transmit a announcement of our conclusions against it on the BBC's second channel at 21:00, with a schedule to be confirmed," the regulator stated.
'Potential to Erode Trust'
The authority's statement said: "Our probe determined that the film's omission to reveal that the voice's father held a role in the Hamas-run authority was materially misleading.
"It meant that the audience did not have essential details which may have been extremely pertinent to their evaluation of the presenter and the details he provided.
"Credibility is at the center of the connection between a media organization and its audience, notably for a public service broadcaster such as the British Broadcasting Corporation.
"This failing had the risk to damage the exceptionally strong degrees of credibility that the public would have invested in a factual film from the broadcaster about the Israel-Gaza war."
The programme was removed from the online platform in last February after the presenter's personal associations were revealed, and in July an corporation's own inquiry determined it violated the broadcaster's content policies on accuracy.
A BBC spokesperson stated: "The regulator's decision is in line with the findings of Peter Johnston's review, that there was a major oversight in the programme in relation to the BBC's Editorial Guidelines on truthfulness, which aligns with Rule 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we accept the regulator's ruling in full. We will follow the directive as soon as the date and language are confirmed."
