The British broadcaster was found to have committed a "major breach" of broadcasting rules by failing to disclose that the voice of a documentary about the Gaza situation was the offspring of a Hamas official, as determined by regulatory body Ofcom.
An investigation by the media regulator into Gaza: How to Survive a Warzone has determined that the documentary was "substantially inaccurate".
The head of the BBC had earlier expressed regret, saying there had been "a major oversight in relation to factual correctness".
The authority has ordered the corporation to transmit a prime-time statement about its conclusions.
"As this represents a major infringement of our code, we are instructing the BBC to air a announcement of our findings against it on BBC Two at 21:00, with a timing to be determined," the statement read.
'Risk to Undermine Credibility'
The watchdog's report declared: "The inquiry we conducted concluded that the film's omission to reveal that the voice's male guardian served in a position in the Hamas-administered administration was significantly deceptive.
"It meant that the public did not have essential details which may have been highly relevant to their evaluation of the voice and the content he shared.
"Trust is at the center of the bond between a broadcaster and its public, notably for a public service broadcaster such as the public broadcaster.
"This oversight had the risk to damage the very considerable degrees of confidence that viewers would have invested in a documentary produced by the BBC about the Israel-Gaza war."
The film was removed from the online platform in the month of February after the narrator's personal associations emerged, and in July an internal BBC review determined it infringed the organization's content policies on truthfulness.
A corporation official said: "The regulator's decision is in line with the findings of the internal assessment, that there was a major oversight in the programme in relation to the broadcaster's journalistic policies on accuracy, which reflects regulation 2.2 of Ofcom's Broadcasting Code.
"We issued an apology for this and we agree with the regulator's ruling in its entirety. We will follow the sanction as soon as the timing and language are determined."
