The public service broadcaster engaged in a "serious breach" of broadcasting rules by omitting to mention that the voice of a documentary about the Gaza conflict was the offspring of a Hamas representative, according to British broadcasting authority Ofcom.
An probe by Ofcom into the programme Gaza: How to Survive a Warzone has determined that the film was "significantly deceptive".
The BBC's director general had already issued an apology, saying there had been "a major oversight in relation to accuracy".
Ofcom has ordered the BBC to broadcast a prime-time statement about its findings.
"Given this constitutes a significant violation of our code, we are directing the BBC to air a statement of our determinations against it on BBC Two at nine o'clock in the evening, with a date to be determined," it said.
'Possibility to Erode Confidence'
The regulator's report stated: "The inquiry we conducted determined that the film's failure to disclose that the narrator's father held a post in the Hamas-run administration was substantially inaccurate.
"This implied that the audience did not have vital facts which may have been very significant to their evaluation of the narrator and the information he shared.
"Confidence is at the core of the relationship between a television network and its audience, especially for a national broadcasting corporation such as the British Broadcasting Corporation.
"This failing had the possibility to erode the significantly high amounts of confidence that viewers would have put in a factual film from the broadcaster about the conflict in Gaza."
The documentary was pulled from the online platform in the month of February after the narrator's family links were revealed, and in this past July an corporation's own inquiry determined it infringed the broadcaster's editorial guidelines on factual correctness.
A BBC spokesperson stated: "The authority's determination is in accordance with the conclusions of the internal assessment, that there was a major oversight in the film in relation to the corporation's content standards on truthfulness, which reflects Rule 2.2 of Ofcom's Broadcasting Code.
"We have apologised for this and we agree with Ofcom's decision in complete. We will adhere to the penalty as soon as the schedule and wording are finalised."
