The British broadcaster was found to have committed a "serious breach" of broadcasting rules by not revealing that the narrator of a programme about Gaza was the offspring of a Hamas official, according to British broadcasting authority Ofcom.
An probe by Ofcom into the programme Gaza: How to Survive a Warzone has determined that the film was "substantially inaccurate".
The chief executive of the broadcaster had previously apologised, noting there had been "a serious error in relation to factual correctness".
Ofcom has ordered the broadcaster to broadcast a prime-time declaration about its findings.
"Given this constitutes a serious breach of our code, we are directing the broadcaster to transmit a message of our determinations against it on BBC2 at 9pm, with a timing to be determined," it said.
'Potential to Undermine Credibility'
The watchdog's statement said: "The inquiry we conducted found that the programme's omission to reveal that the narrator's father held a role in the Hamas-run authority was substantially inaccurate.
"Consequently that the audience did not have vital facts which may have been very significant to their evaluation of the narrator and the details he provided.
"Confidence is at the core 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 degrees of confidence that viewers would have placed in a factual film from the broadcaster about the Gaza conflict."
The film was removed from iPlayer in February after the narrator's familial connections were revealed, and in July an broadcaster's internal assessment found it violated the organization's journalistic standards on truthfulness.
A representative for the broadcaster commented: "The Ofcom ruling is in line with the conclusions of Peter Johnston's review, that there was a serious error in the documentary in relation to the corporation's content standards on factual correctness, which reflects regulation 2.2 of Ofcom's Broadcasting Code.
"We issued an apology for this and we comply with the regulator's ruling in full. We will comply with the directive as soon as the date and wording are finalised."
