The British broadcaster was found to have committed a "significant breach" of media regulations by omitting to mention that the narrator of a documentary about Gaza was the offspring of a Hamas representative, as ruled by UK media regulator Ofcom.
An investigation by the media regulator into the programme Gaza: How to Survive a Warzone has concluded that the film was "substantially inaccurate".
The BBC's director general had previously apologised, saying there had been "a serious error in relation to truthfulness".
The authority has ordered the corporation to transmit a prime-time statement about its findings.
"Since this amounts to a serious breach of our code, we are instructing the corporation to broadcast a message of our determinations against it on the BBC's second channel at 9pm, with a date to be determined," the regulator stated.
'Possibility to Damage Credibility'
The watchdog's announcement declared: "Our probe found that the film's omission to reveal that the voice's male guardian served in a position in the Hamas-administered government was significantly deceptive.
"It meant that the public did not have essential details which may have been extremely pertinent to their evaluation of the presenter and the information he presented.
"Trust is at the center of the relationship between a media organization and its viewers, especially for a public service broadcaster such as the BBC.
"This error had the possibility to erode the exceptionally strong levels of confidence that the public would have invested in a BBC factual programme about the conflict in Gaza."
The programme was withdrawn from the BBC's streaming service in February after the narrator's family links emerged, and in the month of July an corporation's own inquiry concluded it breached the broadcaster's content policies on truthfulness.
A BBC spokesperson said: "The regulator's decision is in agreement with the results of the corporation's inquiry, that there was a major oversight in the documentary in relation to the BBC's Editorial Guidelines on factual correctness, which reflects clause 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 sanction as soon as the schedule and wording are finalised."
