The British broadcaster engaged in a "major breach" of media regulations by failing to disclose that the voice of a programme about the Gaza conflict was the offspring of a Hamas administrator, as determined by UK media regulator Ofcom.
An investigation by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has determined that the documentary was "significantly deceptive".
The BBC's director general had earlier expressed regret, stating there had been "a major oversight in relation to accuracy".
The regulator has directed the broadcaster to broadcast a peak-time announcement about its findings.
"Since this amounts to a major infringement of our regulations, 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 statement read.
'Risk to Undermine Credibility'
The regulator's report declared: "Our probe concluded that the documentary's omission to reveal that the narrator's father held a role in the Hamas-run administration was materially misleading.
"It meant that the audience did not have essential details which may have been highly relevant to their evaluation of the narrator and the content he presented.
"Trust is at the heart of the connection between a broadcaster and its audience, particularly for a state-funded media outlet such as the public broadcaster.
"This failing had the potential to erode the exceptionally strong degrees of trust that audiences would have placed in a documentary produced by the BBC about the conflict in Gaza."
The film was pulled from iPlayer in February after the narrator's family links were revealed, and in this past July an corporation's own inquiry found it breached the corporation's editorial guidelines on factual correctness.
A corporation official said: "The Ofcom ruling is in accordance with the results of the corporation's inquiry, that there was a significant failing in the documentary in relation to the corporation's content standards on accuracy, which aligns with clause 2.2 of Ofcom's Broadcasting Code.
"We issued an apology for this and we agree with the authority's determination in its entirety. We will follow the directive as soon as the schedule and wording are finalised."
