The British broadcaster engaged in a "significant breach" of industry standards by omitting to mention that the narrator of a documentary about the Gaza situation was the son of a Hamas administrator, as ruled by UK media regulator Ofcom.
An investigation by Ofcom into the documentary titled Gaza: How to Survive a Warzone has found that the programme was "substantially inaccurate".
The BBC's director general had already issued an apology, noting there had been "a major oversight in relation to factual correctness".
Ofcom has directed the broadcaster to broadcast a peak-time announcement about its decisions.
"As this represents a major infringement of our code, we are directing the corporation to broadcast a statement of our conclusions against it on BBC Two at 21:00, with a schedule to be confirmed," the regulator stated.
'Risk to Erode Confidence'
The watchdog's announcement declared: "The inquiry we conducted concluded that the film's lack of disclosure that the voice's father served in a role in the Hamas-run administration was significantly deceptive.
"Consequently that the audience did not have critical information which may have been extremely pertinent to their assessment of the voice and the content he presented.
"Credibility is at the heart of the bond between a media organization and its audience, especially for a state-funded media outlet such as the public broadcaster.
"This failing had the risk to damage the significantly high levels of confidence that viewers would have invested in a BBC factual programme about the conflict in Gaza."
The programme was withdrawn from iPlayer in February after the boy's personal associations were revealed, and in July an corporation's own inquiry found it violated the corporation's content policies on accuracy.
A corporation official commented: "The regulator's decision is in line with the findings of the internal assessment, that there was a significant failing in the film in relation to the corporation's content standards on accuracy, which corresponds to clause 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we agree with Ofcom's decision in its entirety. We will adhere to the penalty as soon as the schedule and language are finalised."
