The BBC was found to have committed a "major breach" of media regulations by failing to disclose that the presenter of a programme about Gaza was the son of a Hamas representative, as determined by UK media regulator Ofcom.
An investigation by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has determined that the programme was "significantly deceptive".
The chief executive of the broadcaster had earlier expressed regret, saying there had been "a major oversight in relation to accuracy".
The authority has ordered the BBC to transmit a evening declaration about its conclusions.
"Given this constitutes a serious breach of our code, we are ordering the corporation to air a statement of our determinations against it on BBC2 at 9pm, with a schedule to be determined," the statement read.
'Risk to Undermine Trust'
The authority's statement stated: "The inquiry we conducted found that the film's omission to reveal that the narrator's male guardian served in a role in the Hamas-administered administration was substantially inaccurate.
"It meant that the audience did not have critical information which may have been highly relevant to their judgment of the presenter and the information he presented.
"Confidence is at the center of the relationship between a media organization and its audience, notably for a national broadcasting corporation such as the British Broadcasting Corporation.
"This failing had the risk to erode the significantly high 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 online platform in February after the presenter's family links came to light, and in the month of July an internal BBC review determined it violated the corporation's editorial guidelines on accuracy.
A representative for the broadcaster said: "The regulator's decision is in accordance with the conclusions of the internal assessment, that there was a major oversight in the documentary in relation to the broadcaster's journalistic policies on factual correctness, which corresponds to regulation 2.2 of the authority's broadcasting regulations.
"We have apologised for this and we accept the regulator's ruling in its entirety. We will comply with the sanction as soon as the schedule and language are determined."
