The public service broadcaster was found to have committed a "major breach" of broadcasting rules by not revealing that the narrator of a programme about Gaza was the offspring of a Hamas official, as ruled by British broadcasting authority Ofcom.
An probe by Ofcom 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, stating there had been "a major oversight in relation to accuracy".
Ofcom has ordered the BBC to broadcast a prime-time announcement about its conclusions.
"As this represents a significant violation of our rules, we are directing the broadcaster to air a announcement of our conclusions against it on BBC2 at 21:00, with a schedule to be finalised," it said.
'Possibility to Erode Trust'
The regulator's report said: "Our investigation concluded that the documentary's lack of disclosure that the voice's father served in a position in the Hamas-administered authority was significantly deceptive.
"This implied that the viewers did not have essential details which may have been highly relevant to their judgment of the presenter and the details he provided.
"Credibility is at the heart of the relationship between a broadcaster and its public, notably for a public service broadcaster such as the BBC.
"This error had the risk to erode the exceptionally strong amounts of confidence that viewers would have put in a documentary produced by the BBC about the conflict in Gaza."
The film was pulled from the online platform in the month of February after the boy's family links came to light, and in July an broadcaster's internal assessment found it breached the organization's journalistic standards on truthfulness.
A BBC spokesperson stated: "The regulator's decision is in agreement with the conclusions of the corporation's inquiry, that there was a significant failing in the documentary in relation to the corporation's content standards on accuracy, which aligns with regulation 2.2 of Ofcom's Broadcasting Code.
"We issued an apology for this and we accept Ofcom's decision in complete. We will follow the directive as soon as the timing and wording are determined."
