The British broadcaster committed a "major breach" of industry standards by not revealing that the narrator of a film about the Gaza conflict was the child of a Hamas representative, as determined by British broadcasting authority Ofcom.
An probe by the media regulator into Gaza: How to Survive a Warzone has found that the documentary was "materially misleading".
The chief executive of the broadcaster had earlier expressed regret, stating there had been "a serious error in relation to truthfulness".
The authority has ordered the corporation to air a peak-time announcement about its findings.
"Since this amounts to a serious breach of our code, we are instructing the broadcaster to transmit a statement of our findings against it on BBC2 at 21:00, with a date to be determined," the statement read.
The authority's statement stated: "The inquiry we conducted concluded that the film's lack of disclosure that the narrator's parent occupied a position in the Hamas-run government was substantially inaccurate.
"It meant that the public did not have critical information which may have been extremely pertinent to their judgment of the narrator and the content he presented.
"Confidence is at the core of the bond between a broadcaster and its audience, particularly for a public service broadcaster such as the British Broadcasting Corporation.
"This failing had the possibility to undermine the significantly high amounts of credibility that audiences would have placed in a documentary produced by the BBC about the Israel-Gaza war."
The documentary was pulled from the online platform in last February after the presenter's personal associations were revealed, and in this past July an corporation's own inquiry determined it breached the broadcaster's editorial guidelines on factual correctness.
A representative for the broadcaster stated: "The authority's determination is in accordance with the results of the corporation's inquiry, that there was a major oversight in the film in relation to the corporation's content standards on accuracy, which aligns with clause 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we agree with the authority's determination in full. We will follow the directive as soon as the schedule and language are finalised."
A cybersecurity analyst with over a decade of experience in threat detection and digital forensics, passionate about educating users on online safety.