The British broadcaster committed a "serious breach" of media regulations by failing to disclose that the presenter of a film about Gaza was the son of a Hamas official, as ruled by UK media regulator Ofcom.
An inquiry by Ofcom into Gaza: How to Survive a Warzone has determined that the programme was "significantly deceptive".
The head of the BBC had earlier expressed regret, saying there had been "a significant failing in relation to accuracy".
The regulator has ordered the BBC to broadcast a evening statement about its decisions.
"Given this constitutes a major infringement of our regulations, we are instructing the broadcaster to transmit a message of our findings against it on BBC2 at 9pm, with a timing to be determined," the statement read.
'Possibility to Damage Trust'
The authority's statement declared: "The inquiry we conducted determined that the film's omission to reveal that the narrator's father occupied a position in the Hamas-run government was substantially inaccurate.
"It meant that the audience did not have critical information which may have been extremely pertinent to their evaluation of the presenter and the details he shared.
"Trust is at the heart of the relationship between a broadcaster and its audience, particularly for a national broadcasting corporation such as the British Broadcasting Corporation.
"This oversight had the possibility to damage the very considerable amounts of credibility that audiences would have invested in a documentary produced by the BBC about the Gaza conflict."
The documentary was removed from the BBC's streaming service in the month of February after the narrator's family links emerged, and in this past July an broadcaster's internal assessment determined it infringed the broadcaster's journalistic standards on accuracy.
A corporation official stated: "The authority's determination is in agreement with the conclusions of Peter Johnston's review, that there was a serious error in the film in relation to the broadcaster's journalistic policies on truthfulness, which aligns with Rule 2.2 of Ofcom's Broadcasting Code.
"We have apologised for this and we comply with the regulator's ruling in its entirety. We will comply with the sanction as soon as the timing and wording are determined."
