The BBC engaged in a "significant breach" of broadcasting rules by failing to disclose that the presenter of a documentary about the Gaza conflict was the offspring of a Hamas official, as ruled by regulatory body Ofcom.
An inquiry by the broadcasting watchdog into Gaza: How to Survive a Warzone has determined that the documentary was "significantly deceptive".
The BBC's director general had already issued an apology, noting there had been "a serious error in relation to accuracy".
The authority has ordered the BBC to transmit a peak-time statement about its findings.
"Since this amounts to a significant violation of our regulations, we are instructing the corporation to broadcast a statement of our findings against it on BBC Two at 21:00, with a schedule to be finalised," the regulator stated.
'Risk to Damage Credibility'
The authority's report declared: "Our investigation determined that the film's omission to reveal that the narrator's father held a post in the Hamas-run authority was materially misleading.
"This implied that the viewers did not have essential details which may have been highly relevant to their assessment of the voice and the details he shared.
"Credibility is at the center of the bond between a media organization and its public, notably for a state-funded media outlet such as the BBC.
"This oversight had the possibility to erode the very considerable amounts of trust that audiences would have put in a BBC factual programme about the Israel-Gaza war."
The programme was pulled from the online platform in the month of February after the boy's personal associations emerged, and in the month of July an broadcaster's internal assessment concluded it breached the organization's editorial guidelines on truthfulness.
A corporation official said: "The authority's determination is in accordance with the findings of the corporation's inquiry, that there was a significant failing in the film in relation to the BBC's Editorial Guidelines on factual correctness, which reflects regulation 2.2 of the regulator's media standards.
"We issued an apology for this and we agree with the authority's determination in full. We will follow the directive as soon as the date and wording are confirmed."
