The British broadcaster was found to have committed a "serious breach" of broadcasting rules by not revealing that the narrator of a documentary about the Gaza situation was the child 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 "materially misleading".
The BBC's director general had previously apologised, stating there had been "a serious error in relation to truthfulness".
Ofcom has ordered the corporation to broadcast a peak-time statement about its decisions.
"As this represents a significant violation of our rules, we are instructing the broadcaster to transmit a message of our findings against it on BBC2 at 9pm, with a schedule to be determined," the regulator stated.
'Risk to Undermine Confidence'
The watchdog's report said: "Our probe found that the documentary's failure to disclose that the voice's parent occupied a post in the Hamas-run government was significantly deceptive.
"This implied that the public did not have critical information which may have been highly relevant to their assessment of the narrator and the content he provided.
"Credibility is at the heart of the relationship between a broadcaster and its audience, particularly for a national broadcasting corporation such as the British Broadcasting Corporation.
"This error had the potential to undermine the exceptionally strong amounts of confidence that viewers would have put in a documentary produced by the BBC about the Israel-Gaza war."
The documentary was withdrawn from iPlayer in February after the presenter's family links emerged, and in this past July an broadcaster's internal assessment concluded it breached the broadcaster's journalistic standards on truthfulness.
A corporation official stated: "The Ofcom ruling is in accordance with the findings of the corporation's inquiry, that there was a serious error in the programme in relation to the broadcaster's journalistic policies on factual correctness, which aligns with clause 2.2 of the regulator's media standards.
"We have apologised for this and we agree with the authority's determination in full. We will adhere to the penalty as soon as the schedule and wording are determined."