The public service broadcaster was found to have committed a "significant breach" of media regulations by failing to disclose that the presenter of a documentary about the Gaza situation was the offspring of a Hamas administrator, according to regulatory body Ofcom.
An inquiry by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has found that the documentary was "materially misleading".
The chief executive of the broadcaster had earlier expressed regret, noting there had been "a serious error in relation to accuracy".
The regulator has instructed the BBC to transmit a evening declaration about its findings.
"As this represents a significant violation of our rules, we are directing the broadcaster to broadcast a announcement of our determinations against it on the BBC's second channel at 9pm, with a date to be finalised," the regulator stated.
'Risk to Damage Trust'
The watchdog's announcement declared: "Our investigation concluded that the film's failure to disclose that the voice's male guardian held a role in the Hamas-administered authority was significantly deceptive.
"This implied that the audience did not have essential details which may have been extremely pertinent to their evaluation of the narrator and the content he provided.
"Confidence is at the center of the bond between a media organization and its audience, particularly for a public service broadcaster such as the public broadcaster.
"This failing had the potential to undermine the very considerable degrees of trust that the public would have invested in a BBC factual programme about the Gaza conflict."
The programme was removed from the BBC's streaming service in last February after the narrator's family links emerged, and in this past July an corporation's own inquiry found it violated the broadcaster's editorial guidelines on accuracy.
A representative for the broadcaster said: "The Ofcom ruling is in agreement with the findings of the internal assessment, that there was a major oversight in the documentary in relation to the broadcaster's journalistic policies on factual correctness, which aligns with Rule 2.2 of Ofcom's Broadcasting Code.
"We expressed regret for this and we accept the regulator's ruling in full. We will follow the sanction as soon as the timing and wording are finalised."
