The public service broadcaster engaged in a "significant breach" of broadcasting rules by omitting to mention that the presenter of a programme about Gaza was the offspring of a Hamas official, according to UK media regulator Ofcom.
An probe by the media regulator into the documentary titled Gaza: How to Survive a Warzone has determined that the documentary was "significantly deceptive".
The head of the BBC had previously apologised, stating there had been "a major oversight in relation to truthfulness".
The authority has directed the corporation to transmit a peak-time declaration about its conclusions.
"Since this amounts to a serious breach of our rules, we are directing the broadcaster to transmit a announcement of our conclusions against it on BBC Two at nine o'clock in the evening, with a date to be determined," the regulator stated.
'Risk to Erode Trust'
The watchdog's statement stated: "The inquiry we conducted determined that the film's omission to reveal that the voice's father held a role in the Hamas-administered government was significantly deceptive.
"This implied that the public did not have critical information which may have been very significant to their assessment of the narrator and the details he shared.
"Trust is at the heart of the bond between a media organization and its audience, particularly for a national broadcasting corporation such as the public broadcaster.
"This failing had the risk to erode the very considerable levels of trust that audiences would have invested in a BBC factual programme about the Gaza conflict."
The film was withdrawn from the BBC's streaming service in February after the narrator's personal associations were revealed, and in the month of July an corporation's own inquiry determined it violated the organization's editorial guidelines on factual correctness.
A BBC spokesperson said: "The authority's determination is in agreement with the results of the internal assessment, that there was a significant failing in the film in relation to the broadcaster's journalistic policies on truthfulness, which reflects regulation 2.2 of the authority's broadcasting regulations.
"We have apologised for this and we comply with Ofcom's decision in complete. We will follow the directive as soon as the timing and wording are finalised."
