The British broadcaster engaged in a "major breach" of broadcasting rules by omitting to mention that the voice of a programme about Gaza was the offspring of a Hamas administrator, as determined by regulatory body Ofcom.
An inquiry by the media regulator into the documentary titled Gaza: How to Survive a Warzone has concluded that the programme was "substantially inaccurate".
The chief executive of the broadcaster had previously apologised, noting there had been "a significant failing in relation to truthfulness".
The authority has ordered the broadcaster to air a peak-time announcement about its decisions.
"As this represents a significant violation of our code, we are directing the broadcaster to broadcast a message of our determinations against it on the BBC's second channel at 21:00, with a schedule to be finalised," the regulator stated.
'Possibility to Damage Trust'
The watchdog's statement declared: "Our probe determined that the programme's failure to disclose that the voice's male guardian held a post in the Hamas-administered administration was materially misleading.
"It meant that the public did not have essential details which may have been highly relevant to their evaluation of the presenter and the details he provided.
"Credibility is at the core of the relationship between a media organization and its audience, particularly for a state-funded media outlet such as the British Broadcasting Corporation.
"This error had the potential to erode the very considerable levels of confidence that audiences would have invested in a documentary produced by the BBC about the Gaza conflict."
The programme was removed from the online platform in the month of February after the narrator's family links came to light, and in the month of July an internal BBC review determined it breached the corporation's content policies on accuracy.
A corporation official commented: "The Ofcom ruling is in line with the conclusions of the internal assessment, that there was a serious error in the programme in relation to the broadcaster's journalistic policies on truthfulness, which corresponds to Rule 2.2 of Ofcom's Broadcasting Code.
"We expressed regret for this and we comply with the authority's determination in complete. We will adhere to the directive as soon as the schedule and wording are determined."
