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 son of a Hamas administrator, as determined by UK media regulator Ofcom.
An investigation by the broadcasting watchdog into Gaza: How to Survive a Warzone has determined that the programme was "substantially inaccurate".
The BBC's director general had previously apologised, saying there had been "a significant failing in relation to accuracy".
The regulator has instructed the broadcaster to broadcast a peak-time statement about its conclusions.
"Since this amounts to a significant violation of our rules, we are ordering the corporation to broadcast a message of our findings against it on BBC Two at nine o'clock in the evening, with a schedule to be finalised," the statement read.
'Possibility to Damage Trust'
The authority's report said: "Our probe determined that the film's failure to disclose that the narrator's father held a position in the Hamas-administered government was materially misleading.
"Consequently that the audience did not have essential details which may have been highly relevant to their evaluation of the voice and the information he provided.
"Confidence is at the heart of the connection between a television network and its audience, particularly for a state-funded media outlet such as the BBC.
"This error had the possibility to erode the exceptionally strong degrees of trust that viewers would have placed in a factual film from the broadcaster about the Israel-Gaza war."
The programme was withdrawn from the online platform in last February after the narrator's family links came to light, and in this past July an broadcaster's internal assessment determined it breached the broadcaster's journalistic standards on accuracy.
A corporation official commented: "The Ofcom ruling is in line with the conclusions of the corporation's inquiry, that there was a significant failing in the film in relation to the broadcaster's journalistic policies on accuracy, which reflects Rule 2.2 of Ofcom's Broadcasting Code.
"We expressed regret for this and we accept the authority's determination in its entirety. We will comply with the directive as soon as the schedule and wording are finalised."
