The public service broadcaster was found to have committed a "significant breach" of media regulations by failing to disclose that the narrator of a documentary about Gaza was the offspring of a Hamas administrator, as determined by regulatory body Ofcom.
An inquiry by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has determined that the documentary was "substantially inaccurate".
The head of the BBC had previously apologised, noting there had been "a major oversight in relation to truthfulness".
Ofcom has directed the BBC to broadcast a prime-time announcement about its decisions.
"Given this constitutes a significant violation of our regulations, we are directing the broadcaster to transmit a announcement of our findings against it on BBC Two at 9pm, with a schedule to be finalised," the statement read.
'Risk to Erode Confidence'
The authority's statement said: "Our investigation concluded that the film's lack of disclosure that the presenter's male guardian served in a position in the Hamas-administered government was significantly deceptive.
"Consequently that the viewers did not have essential details which may have been very significant to their assessment of the presenter and the content he provided.
"Confidence is at the core of the bond between a broadcaster and its audience, notably for a state-funded media outlet such as the public broadcaster.
"This failing had the potential to damage the exceptionally strong amounts of credibility that the public would have put in a documentary produced by the BBC about the conflict in Gaza."
The programme was pulled from iPlayer in February after the boy's family links came to light, and in July an corporation's own inquiry found it infringed the broadcaster's journalistic standards on truthfulness.
A representative for the broadcaster said: "The authority's determination is in line with the conclusions of Peter Johnston's review, that there was a significant failing in the film in relation to the BBC's Editorial Guidelines on accuracy, which corresponds to clause 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we agree with the authority's determination in complete. We will adhere to the penalty as soon as the timing and wording are finalised."
