The British broadcaster engaged in a "serious breach" of industry standards by not revealing that the voice of a documentary about the Gaza situation was the offspring of a Hamas administrator, as ruled by UK media regulator Ofcom.
An inquiry by Ofcom into the documentary titled Gaza: How to Survive a Warzone has concluded that the film was "materially misleading".
The chief executive of the broadcaster had already issued an apology, stating there had been "a major oversight in relation to truthfulness".
Ofcom has directed the corporation to transmit a evening statement about its decisions.
"Given this constitutes a major infringement of our rules, we are ordering the corporation to air a message of our determinations against it on BBC2 at 21:00, with a timing to be confirmed," the regulator stated.
'Possibility to Damage Trust'
The authority's statement said: "Our probe found that the documentary's failure to disclose that the narrator's parent occupied a post in the Hamas-administered government was significantly deceptive.
"It meant that the public did not have vital facts which may have been extremely pertinent to their assessment of the narrator and the details he presented.
"Credibility is at the center of the connection between a media organization and its audience, notably for a state-funded media outlet such as the BBC.
"This failing had the possibility to erode the exceptionally strong levels of confidence that the public would have put in a BBC factual programme about the Israel-Gaza war."
The documentary was pulled from the BBC's streaming service in February after the narrator's family links came to light, and in July an corporation's own inquiry concluded it violated the broadcaster's journalistic standards on truthfulness.
A corporation official commented: "The regulator's decision is in agreement with the findings of the corporation's inquiry, that there was a serious error in the documentary in relation to the corporation's content standards on accuracy, which aligns with regulation 2.2 of the authority's broadcasting regulations.
"We have apologised for this and we comply with Ofcom's decision in full. We will comply with the sanction as soon as the date and language are determined."
