The British broadcaster committed a "major breach" of industry standards by failing to disclose that the voice of a documentary about the Gaza situation was the child of a Hamas representative, according to UK media regulator Ofcom.
An probe by the media regulator into the documentary titled Gaza: How to Survive a Warzone has found that the programme was "substantially inaccurate".
The BBC's director general had previously apologised, saying there had been "a serious error in relation to accuracy".
The authority has instructed the corporation to air a peak-time declaration about its conclusions.
"Since this amounts to a significant violation of our rules, we are instructing the BBC to transmit a message of our conclusions against it on BBC Two at 21:00, with a timing to be confirmed," the regulator stated.
'Possibility to Erode Trust'
The authority's report said: "Our probe determined that the film's lack of disclosure that the voice's male guardian held a post in the Hamas-controlled administration was substantially inaccurate.
"Consequently that the public did not have vital facts which may have been highly relevant to their evaluation of the narrator and the details he shared.
"Credibility is at the center of the relationship between a television network and its audience, notably for a national broadcasting corporation such as the BBC.
"This failing had the possibility to undermine the significantly high degrees of credibility that the public would have invested in a BBC factual programme about the conflict in Gaza."
The programme was withdrawn from iPlayer in the month of February after the narrator's family links were revealed, and in this past July an corporation's own inquiry concluded it infringed the broadcaster's editorial guidelines on truthfulness.
A BBC spokesperson commented: "The regulator's decision is in agreement with the findings of the internal assessment, that there was a significant failing in the documentary in relation to the broadcaster's journalistic policies on factual correctness, which aligns with regulation 2.2 of Ofcom's Broadcasting Code.
"We expressed regret for this and we comply with the authority's determination in full. We will adhere to the directive as soon as the date and wording are confirmed."
