The public service broadcaster engaged in a "significant breach" of broadcasting rules by failing to disclose that the presenter of a film about Gaza was the child of a Hamas administrator, as ruled by British broadcasting authority Ofcom.
An probe by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has found that the programme was "materially misleading".
The chief executive of the broadcaster had earlier expressed regret, stating there had been "a significant failing in relation to accuracy".
The regulator has ordered the BBC to transmit a evening announcement about its conclusions.
"As this represents a significant violation of our code, we are ordering the broadcaster to transmit a message of our determinations against it on BBC Two at 21:00, with a timing to be confirmed," the statement read.
'Potential to Undermine Confidence'
The authority's report said: "Our investigation concluded that the film's omission to reveal that the presenter's father served in a position in the Hamas-run authority was significantly deceptive.
"It meant that the audience did not have vital facts which may have been highly relevant to their evaluation of the presenter and the details he provided.
"Trust is at the heart of the bond between a broadcaster and its audience, particularly for a national broadcasting corporation such as the BBC.
"This failing had the potential to undermine the very considerable degrees of confidence that audiences would have put in a factual film from the broadcaster about the conflict in Gaza."
The programme was removed from iPlayer in February after the boy's personal associations came to light, and in July an broadcaster's internal assessment determined it violated the broadcaster's content policies on accuracy.
A BBC spokesperson stated: "The Ofcom ruling is in accordance with the findings 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 reflects Rule 2.2 of Ofcom's Broadcasting Code.
"We issued an apology for this and we comply with the regulator's ruling in full. We will comply with the sanction as soon as the timing and wording are determined."
