The British broadcaster engaged in a "serious breach" of broadcasting rules by omitting to mention that the presenter of a programme about the Gaza situation was the offspring of a Hamas representative, as ruled by regulatory body Ofcom.
An investigation by Ofcom into the documentary titled Gaza: How to Survive a Warzone has concluded that the documentary was "substantially inaccurate".
The chief executive of the broadcaster had already issued an apology, noting there had been "a serious error in relation to truthfulness".
The regulator has directed the corporation to transmit a prime-time announcement about its conclusions.
"Since this amounts to a significant violation of our rules, we are directing the corporation to air a announcement of our determinations against it on BBC Two at 9pm, with a timing to be determined," the statement read.
'Potential to Erode Credibility'
The authority's report said: "Our investigation found that the programme's lack of disclosure that the voice's male guardian occupied a post in the Hamas-controlled authority was significantly deceptive.
"Consequently that the audience did not have essential details which may have been extremely pertinent to their evaluation of the voice and the details he shared.
"Credibility is at the heart of the relationship between a television network and its audience, especially for a national broadcasting corporation such as the public broadcaster.
"This error had the potential to undermine the very considerable amounts of confidence that the public would have put in a factual film from the broadcaster about the conflict in Gaza."
The film was pulled from the online platform in February after the presenter's family links came to light, and in this past July an broadcaster's internal assessment determined it violated the organization's journalistic standards on factual correctness.
A BBC spokesperson stated: "The authority's determination is in agreement with the conclusions of the corporation's inquiry, that there was a major oversight 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 authority's determination in its entirety. We will follow the sanction as soon as the schedule and wording are determined."
