The British broadcaster committed a "serious breach" of industry standards by failing to disclose that the voice of a film about the Gaza situation was the child of a Hamas official, as ruled by British broadcasting authority Ofcom.
An probe by the broadcasting watchdog into Gaza: How to Survive a Warzone has found that the film was "materially misleading".
The BBC's director general had already issued an apology, saying there had been "a major oversight in relation to accuracy".
The authority has ordered the BBC to air a peak-time declaration about its decisions.
"Since this amounts to a significant violation of our code, we are instructing the broadcaster to transmit a message of our findings against it on BBC2 at 21:00, with a timing to be confirmed," the regulator stated.
'Possibility to Damage Credibility'
The authority's statement declared: "Our probe determined that the documentary's lack of disclosure that the narrator's male guardian occupied a position in the Hamas-controlled authority was substantially inaccurate.
"This implied that the audience did not have vital facts which may have been highly relevant to their evaluation of the presenter and the details he presented.
"Trust is at the core of the bond between a media organization and its viewers, notably for a public service broadcaster such as the British Broadcasting Corporation.
"This oversight had the possibility to undermine the significantly high amounts of trust that the public would have put in a documentary produced by the BBC about the conflict in Gaza."
The film was withdrawn from the online platform in the month of February after the narrator's familial connections came to light, and in this past July an broadcaster's internal assessment found it breached the corporation's editorial guidelines on truthfulness.
A corporation official stated: "The regulator's decision is in accordance with the findings of the internal assessment, that there was a significant failing in the documentary in relation to the BBC's Editorial Guidelines on factual correctness, which reflects regulation 2.2 of the regulator's media standards.
"We expressed regret for this and we accept the regulator's ruling in full. We will adhere to the directive as soon as the schedule and language are confirmed."
