The British broadcaster was found to have committed a "major breach" of broadcasting rules by omitting to mention that the narrator of a film about the Gaza situation was the offspring of a Hamas official, as ruled by regulatory body Ofcom.
An inquiry by the broadcasting watchdog into Gaza: How to Survive a Warzone has concluded that the programme 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 directed the BBC to air a peak-time statement about its conclusions.
"Since this amounts to a serious breach of our regulations, we are directing the BBC to broadcast a announcement of our determinations against it on the BBC's second channel at 9pm, with a timing to be confirmed," the regulator stated.
'Potential to Undermine Credibility'
The authority's report said: "Our investigation concluded that the film's failure to disclose that the voice's father served in a position in the Hamas-run administration was substantially inaccurate.
"It meant that the public did not have vital facts which may have been extremely pertinent to their assessment of the narrator and the details he presented.
"Confidence is at the center of the bond between a television network and its audience, notably for a national broadcasting corporation such as the British Broadcasting Corporation.
"This oversight had the possibility to erode the significantly high amounts of trust that audiences would have put in a documentary produced by the BBC about the Gaza conflict."
The film was removed from the BBC's streaming service in last February after the narrator's family links were revealed, and in the month of July an broadcaster's internal assessment concluded it violated the corporation's editorial guidelines on factual correctness.
A representative for the broadcaster commented: "The authority's determination is in accordance with the results of the corporation's inquiry, that there was a serious error in the documentary in relation to the BBC's Editorial Guidelines on factual correctness, which reflects clause 2.2 of Ofcom's Broadcasting Code.
"We issued an apology for this and we agree with the authority's determination in its entirety. We will adhere to the penalty as soon as the schedule and language are finalised."
