The British broadcaster was found to have committed a "serious breach" of industry standards by failing to disclose that the narrator of a film about the Gaza situation was the offspring of a Hamas administrator, as ruled by British broadcasting authority Ofcom.
An investigation by the media regulator into the programme Gaza: How to Survive a Warzone has concluded that the documentary was "significantly deceptive".
The head of the BBC had earlier expressed regret, saying there had been "a major oversight in relation to truthfulness".
Ofcom has ordered the broadcaster to broadcast a peak-time declaration about its decisions.
"Given this constitutes a serious breach of our code, we are instructing the broadcaster to broadcast a announcement of our findings against it on the BBC's second channel at 9pm, with a timing to be confirmed," the statement read.
'Risk to Undermine Confidence'
The authority's statement stated: "The inquiry we conducted concluded that the documentary's omission to reveal that the presenter's male guardian served in a position in the Hamas-run administration was materially misleading.
"It meant that the audience did not have vital facts which may have been extremely pertinent to their judgment of the presenter and the information he shared.
"Credibility is at the center of the connection between a broadcaster and its viewers, notably for a state-funded media outlet such as the British Broadcasting Corporation.
"This failing had the risk to undermine the exceptionally strong levels of credibility that viewers would have put in a factual film from the broadcaster about the Gaza conflict."
The programme was removed from the online platform in February after the presenter's personal associations emerged, and in the month of July an internal BBC review found it violated the organization's journalistic standards on accuracy.
A corporation official stated: "The authority's determination is in accordance with the findings of the internal assessment, that there was a serious error in the documentary in relation to the corporation's content standards on accuracy, which reflects Rule 2.2 of the regulator's media standards.
"We expressed regret for this and we accept the regulator's ruling in complete. We will adhere to the sanction as soon as the schedule and wording are confirmed."
