The British broadcaster committed a "serious breach" of broadcasting rules by not revealing that the presenter of a programme about the Gaza situation was the son of a Hamas official, as ruled by UK media regulator Ofcom.
An inquiry by the broadcasting watchdog into Gaza: How to Survive a Warzone has determined that the programme was "significantly deceptive".
The head of the BBC had previously apologised, stating there had been "a significant failing in relation to factual correctness".
The regulator has ordered the broadcaster to broadcast a peak-time statement about its conclusions.
"As this represents a significant violation of our rules, we are instructing the corporation to broadcast a statement of our determinations against it on BBC2 at nine o'clock in the evening, with a schedule to be confirmed," the regulator stated.
'Possibility to Damage Trust'
The authority's report said: "The inquiry we conducted determined that the film's failure to disclose that the narrator's parent held a post in the Hamas-run government was significantly deceptive.
"This implied that the audience did not have critical information which may have been highly relevant to their assessment of the narrator and the content he provided.
"Trust is at the center of the bond between a television network and its audience, notably for a state-funded media outlet such as the BBC.
"This failing had the possibility to damage the exceptionally strong levels of confidence that the public would have invested in a BBC factual programme about the Gaza conflict."
The documentary was withdrawn from iPlayer in last February after the narrator's family links emerged, and in the month of July an broadcaster's internal assessment determined it violated the organization's editorial guidelines on truthfulness.
A representative for the broadcaster commented: "The authority's determination is in agreement with the findings of Peter Johnston's review, that there was a serious error in the documentary in relation to the corporation's content standards on truthfulness, which corresponds to regulation 2.2 of Ofcom's Broadcasting Code.
"We have apologised for this and we agree with the authority's determination in its entirety. We will comply with the directive as soon as the date and wording are finalised."
