The public service broadcaster engaged in a "serious breach" of industry standards by not revealing that the narrator of a film about the Gaza situation was the son of a Hamas official, as ruled by regulatory body Ofcom.
An probe by the broadcasting watchdog into Gaza: How to Survive a Warzone has determined that the film was "significantly deceptive".
The head of the BBC had earlier expressed regret, saying there had been "a significant failing in relation to accuracy".
The regulator has ordered the BBC to air a peak-time statement about its findings.
"Given this constitutes a major infringement of our regulations, we are ordering the corporation to air a statement of our conclusions against it on BBC Two at nine o'clock in the evening, with a schedule to be determined," the statement read.
'Possibility to Undermine Confidence'
The regulator's statement said: "Our investigation concluded that the programme's failure to disclose that the presenter's male guardian held a position in the Hamas-run administration was substantially inaccurate.
"It meant that the audience did not have critical information which may have been extremely pertinent to their judgment of the presenter and the details he provided.
"Trust is at the core of the relationship between a broadcaster and its public, particularly for a state-funded media outlet such as the BBC.
"This failing had the possibility to damage the significantly high amounts of confidence that the public would have put in a factual film from the broadcaster about the conflict in Gaza."
The film was pulled from iPlayer in last February after the narrator's personal associations emerged, and in this past July an broadcaster's internal assessment concluded it violated the broadcaster's content policies on factual correctness.
A representative for the broadcaster commented: "The authority's determination is in accordance with the conclusions of the corporation's inquiry, that there was a significant failing in the film in relation to the broadcaster's journalistic policies on truthfulness, which reflects regulation 2.2 of the regulator's media standards.
"We issued an apology for this and we agree with the regulator's ruling in complete. We will adhere to the directive as soon as the schedule and wording are finalised."
