The BBC was found to have committed a "significant breach" of media regulations by failing to disclose that the voice of a documentary about Gaza was the son of a Hamas representative, according to UK media regulator Ofcom.
An inquiry by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has found that the documentary was "materially misleading".
The BBC's director general had earlier expressed regret, saying there had been "a major oversight in relation to truthfulness".
Ofcom has ordered the BBC to broadcast a prime-time declaration about its decisions.
"As this represents a significant violation of our regulations, we are ordering the broadcaster to transmit a statement of our findings against it on the BBC's second channel at 21:00, with a schedule to be confirmed," it said.
'Risk to Erode Confidence'
The watchdog's announcement declared: "The inquiry we conducted concluded that the documentary's omission to reveal that the narrator's male guardian served in a role in the Hamas-administered authority was significantly deceptive.
"It meant that the audience did not have essential details which may have been highly relevant to their assessment of the voice and the information he provided.
"Trust is at the heart of the bond between a broadcaster and its audience, particularly for a state-funded media outlet such as the British Broadcasting Corporation.
"This oversight had the risk to undermine the very considerable degrees of credibility that viewers would have invested in a BBC factual programme about the conflict in Gaza."
The documentary was removed from iPlayer in the month of February after the narrator's familial connections emerged, and in this past July an internal BBC review found it infringed the organization's content policies on accuracy.
A representative for the broadcaster stated: "The regulator's decision is in accordance with the findings of the corporation's inquiry, that there was a significant failing in the documentary in relation to the BBC's Editorial Guidelines on accuracy, which corresponds to regulation 2.2 of Ofcom's Broadcasting Code.
"We issued an apology for this and we comply with the regulator's ruling in its entirety. We will adhere to the penalty as soon as the schedule and language are finalised."
