The British broadcaster was found to have committed a "serious breach" of media regulations by failing to disclose that the narrator of a film about the Gaza conflict was the offspring of a Hamas official, as determined by regulatory body Ofcom.
An inquiry by Ofcom into the documentary titled Gaza: How to Survive a Warzone has determined that the film was "materially misleading".
The BBC's director general had previously apologised, noting there had been "a significant failing in relation to accuracy".
The authority has ordered the BBC to broadcast a prime-time statement about its decisions.
"Given this constitutes a serious breach of our regulations, we are directing the corporation to transmit a message of our determinations against it on the BBC's second channel at 9pm, with a schedule to be finalised," it said.
'Risk to Damage Trust'
The watchdog's report declared: "Our probe found that the documentary's omission to reveal that the presenter's parent served in a position in the Hamas-run authority was significantly deceptive.
"Consequently that the audience did not have vital facts which may have been highly relevant to their judgment of the voice and the details he presented.
"Confidence is at the center of the connection between a television network and its viewers, particularly for a state-funded media outlet such as the British Broadcasting Corporation.
"This oversight had the possibility to damage the significantly high levels of credibility that the public would have put in a BBC factual programme about the conflict in Gaza."
The programme was pulled from the online platform in February after the boy's family links came to light, and in this past July an broadcaster's internal assessment concluded it violated the corporation's journalistic standards on truthfulness.
A corporation official said: "The regulator's decision is in accordance with the results of Peter Johnston's review, that there was a significant failing in the programme in relation to the broadcaster's journalistic policies on factual correctness, which aligns with regulation 2.2 of the regulator's media standards.
"We expressed regret for this and we comply with Ofcom's decision in full. We will follow the sanction as soon as the schedule and language are determined."
