The public service broadcaster committed a "significant breach" of broadcasting rules by failing to disclose that the narrator of a documentary about Gaza was the child of a Hamas representative, as ruled by UK media regulator Ofcom.
An inquiry by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has found that the film was "materially misleading".
The head of the BBC had earlier expressed regret, stating there had been "a major oversight in relation to factual correctness".
The regulator has directed the broadcaster to transmit a prime-time announcement about its findings.
"As this represents a serious breach of our code, we are instructing the broadcaster to broadcast a statement of our determinations against it on BBC Two at 9pm, with a timing to be finalised," the statement read.
'Possibility to Damage Confidence'
The watchdog's report declared: "Our investigation found that the film's lack of disclosure that the narrator's male guardian served in a position in the Hamas-controlled administration was significantly deceptive.
"It meant that the audience did not have essential details which may have been extremely pertinent to their evaluation of the narrator and the information he provided.
"Credibility is at the center of the relationship between a media organization and its audience, especially for a state-funded media outlet such as the BBC.
"This oversight had the potential to erode the significantly high levels of trust that audiences would have put in a documentary produced by the BBC about the conflict in Gaza."
The film was withdrawn from iPlayer in last February after the presenter's familial connections emerged, and in July an corporation's own inquiry found it infringed the organization's journalistic standards on truthfulness.
A representative for the broadcaster commented: "The Ofcom ruling is in line 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 aligns with Rule 2.2 of Ofcom's Broadcasting Code.
"We issued an apology for this and we comply with the regulator's ruling in complete. We will follow the penalty as soon as the date and language are finalised."
