The BBC was found to have committed a "significant breach" of broadcasting rules by omitting to mention that the voice of a film about the Gaza conflict was the offspring of a Hamas representative, as determined by UK media regulator Ofcom.
An inquiry by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has concluded that the film was "significantly deceptive".
The chief executive of the broadcaster had previously apologised, saying there had been "a major oversight in relation to factual correctness".
The authority has directed the BBC to air a prime-time statement about its findings.
"Since this amounts to a major infringement of our code, we are ordering the broadcaster to broadcast a statement of our findings against it on BBC2 at 9pm, with a timing to be finalised," it said.
'Potential to Undermine Trust'
The authority's statement stated: "The inquiry we conducted concluded that the film's lack of disclosure that the narrator's male guardian held a post in the Hamas-administered government was substantially inaccurate.
"Consequently that the audience did not have vital facts which may have been extremely pertinent to their judgment of the voice and the content he provided.
"Trust is at the center of the relationship between a media organization and its viewers, particularly for a national broadcasting corporation such as the public broadcaster.
"This oversight had the possibility to undermine the exceptionally strong degrees of confidence that the public would have invested in a factual film from the broadcaster about the Gaza conflict."
The film was removed from iPlayer in last February after the presenter's family links were revealed, and in this past July an corporation's own inquiry found it violated the organization's journalistic standards on factual correctness.
A BBC spokesperson stated: "The Ofcom ruling is in accordance with the conclusions of the corporation's inquiry, that there was a serious error in the documentary in relation to the broadcaster's journalistic policies on truthfulness, which corresponds to Rule 2.2 of the regulator's media standards.
"We issued an apology for this and we agree with the authority's determination in full. We will comply with the penalty as soon as the date and wording are finalised."
