The BBC was found to have committed a "significant breach" of industry standards by failing to disclose that the presenter of a programme about the Gaza conflict was the child of a Hamas administrator, as determined by regulatory body Ofcom.
An investigation by the broadcasting watchdog into Gaza: How to Survive a Warzone has found that the programme was "materially misleading".
The head of the BBC had already issued an apology, stating there had been "a major oversight in relation to factual correctness".
Ofcom has ordered the broadcaster to broadcast a evening statement about its decisions.
"Given this constitutes a major infringement of our rules, we are instructing the corporation to air a statement of our conclusions against it on BBC2 at 9pm, with a timing to be confirmed," it said.
'Risk to Erode Trust'
The watchdog's announcement said: "Our probe concluded that the documentary's failure to disclose that the presenter's male guardian occupied a position in the Hamas-controlled administration was materially misleading.
"This implied that the audience did not have essential details which may have been very significant to their evaluation of the narrator and the details he provided.
"Credibility is at the core of the bond between a broadcaster and its audience, notably for a national broadcasting corporation such as the British Broadcasting Corporation.
"This oversight had the potential to undermine the exceptionally strong levels of trust that audiences would have put in a documentary produced by the BBC about the Israel-Gaza war."
The programme was withdrawn from the BBC's streaming service in the month of February after the presenter's family links were revealed, and in the month of July an broadcaster's internal assessment found it violated the broadcaster's content policies on factual correctness.
A BBC spokesperson commented: "The regulator's decision is in line with the conclusions of the corporation's inquiry, that there was a major oversight in the film in relation to the broadcaster's journalistic policies on factual correctness, which reflects regulation 2.2 of Ofcom's Broadcasting Code.
"We issued an apology for this and we agree with the regulator's ruling in full. We will adhere to the directive as soon as the timing and wording are determined."
