The public service broadcaster committed a "significant breach" of broadcasting rules by failing to disclose that the narrator of a film about Gaza was the offspring of a Hamas representative, according to British broadcasting authority Ofcom.
An inquiry by the media regulator into Gaza: How to Survive a Warzone has found that the programme was "substantially inaccurate".
The BBC's director general had previously apologised, noting there had been "a significant failing in relation to factual correctness".
The authority has directed the BBC to broadcast a prime-time statement about its conclusions.
"Given this constitutes a significant violation of our code, we are directing the broadcaster to broadcast a statement of our conclusions against it on the BBC's second channel at 21:00, with a date to be finalised," the statement read.
'Potential to Erode Confidence'
The watchdog's announcement stated: "The inquiry we conducted concluded that the film's lack of disclosure that the narrator's father served in a role in the Hamas-controlled administration was materially misleading.
"Consequently that the public did not have essential details which may have been extremely pertinent to their assessment of the narrator and the content he presented.
"Credibility is at the center of the relationship between a broadcaster and its audience, particularly for a state-funded media outlet such as the BBC.
"This failing had the risk to erode the very considerable levels of trust that the public would have invested in a documentary produced by the BBC about the Gaza conflict."
The programme was removed from iPlayer in the month of February after the presenter's familial connections emerged, and in July an corporation's own inquiry determined it infringed the corporation's editorial guidelines on factual correctness.
A corporation official stated: "The authority's determination is in agreement with the results of the internal assessment, that there was a significant failing in the documentary in relation to the BBC's Editorial Guidelines on truthfulness, which reflects regulation 2.2 of the regulator's media standards.
"We expressed regret for this and we accept Ofcom's decision in its entirety. We will comply with the sanction as soon as the date and wording are confirmed."
