The British broadcaster was found to have committed a "significant breach" of broadcasting rules by not revealing that the voice of a programme about the Gaza situation was the son of a Hamas official, according to UK media regulator Ofcom.
An investigation by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has determined that the film was "substantially inaccurate".
The head of the BBC had already issued an apology, noting there had been "a major oversight in relation to truthfulness".
The regulator has instructed the corporation to broadcast a peak-time statement about its conclusions.
"Since this amounts to a major infringement of our rules, we are directing the corporation to transmit a statement of our conclusions against it on BBC2 at 21:00, with a timing to be confirmed," it said.
'Possibility to Undermine Confidence'
The watchdog's announcement said: "Our probe determined that the documentary's lack of disclosure that the presenter's father held a post in the Hamas-run government was materially misleading.
"This implied that the audience did not have vital facts which may have been highly relevant to their assessment of the voice and the content he provided.
"Confidence is at the center of the connection between a television network and its audience, especially for a national broadcasting corporation such as the BBC.
"This failing had the risk to undermine the exceptionally strong amounts of trust that audiences would have put in a BBC factual programme about the Gaza conflict."
The documentary was pulled from the online platform in February after the presenter's family links came to light, and in the month of July an broadcaster's internal assessment found it breached the organization's content policies on factual correctness.
A representative for the broadcaster said: "The regulator's decision is in accordance with the conclusions of Peter Johnston's review, that there was a significant failing in the film in relation to the corporation's content standards on factual correctness, which reflects regulation 2.2 of the regulator's media standards.
"We issued an apology for this and we agree with the regulator's ruling in its entirety. We will adhere to the directive as soon as the schedule and language are finalised."
