The public service broadcaster engaged in a "significant breach" of broadcasting rules by omitting to mention that the presenter of a programme about the Gaza situation was the child of a Hamas representative, as ruled by British broadcasting authority Ofcom.
An investigation by the media regulator into the documentary titled Gaza: How to Survive a Warzone has concluded that the film was "substantially inaccurate".
The BBC's director general had earlier expressed regret, stating there had been "a significant failing in relation to accuracy".
The authority has directed the corporation to transmit a evening statement about its decisions.
"Since this amounts to a serious breach of our regulations, we are ordering the corporation to transmit a announcement of our findings against it on the BBC's second channel at 21:00, with a schedule to be finalised," it said.
'Possibility to Erode Trust'
The authority's announcement declared: "The inquiry we conducted concluded that the film's omission to reveal that the voice's father served in a position in the Hamas-run administration was substantially inaccurate.
"It meant that the audience did not have critical information which may have been very significant to their judgment of the presenter and the content he shared.
"Trust is at the core of the relationship between a television network and its public, notably for a national broadcasting corporation such as the British Broadcasting Corporation.
"This failing had the risk to undermine the exceptionally strong levels of credibility that audiences would have invested in a BBC factual programme about the Gaza conflict."
The film was withdrawn from iPlayer in last February after the presenter's family links came to light, and in the month of July an internal BBC review concluded it breached the corporation's content policies on factual correctness.
A BBC spokesperson commented: "The authority's determination is in accordance with the conclusions of the corporation's inquiry, that there was a significant failing in the documentary in relation to the broadcaster's journalistic policies on accuracy, which corresponds to Rule 2.2 of Ofcom's Broadcasting Code.
"We have apologised for this and we comply with the regulator's ruling in complete. We will comply with the penalty as soon as the schedule and wording are confirmed."
