The public service broadcaster was found to have committed a "major breach" of media regulations by not revealing that the presenter of a documentary about the Gaza situation was the offspring of a Hamas official, as determined by UK media regulator Ofcom.
An inquiry by Ofcom into Gaza: How to Survive a Warzone has determined that the documentary was "substantially inaccurate".
The chief executive of the broadcaster had previously apologised, noting there had been "a serious error in relation to truthfulness".
Ofcom has instructed the BBC to transmit a prime-time announcement about its decisions.
"Given this constitutes a serious breach of our rules, we are directing the BBC to transmit a announcement of our conclusions against it on BBC Two at 9pm, with a timing to be finalised," it said.
'Risk to Damage Trust'
The authority's report declared: "Our probe concluded that the programme's omission to reveal that the presenter's father held a role in the Hamas-run authority was substantially inaccurate.
"Consequently that the public did not have critical information which may have been very significant to their evaluation of the presenter and the content he provided.
"Confidence is at the core of the relationship between a media organization and its audience, notably for a public service broadcaster such as the BBC.
"This error had the risk to undermine the exceptionally strong amounts of confidence that audiences would have placed in a BBC factual programme about the Israel-Gaza war."
The film was pulled from the BBC's streaming service in last February after the presenter's family links were revealed, and in this past July an corporation's own inquiry concluded it violated the corporation's editorial guidelines on factual correctness.
A BBC spokesperson said: "The Ofcom ruling is in agreement with the results of Peter Johnston's review, that there was a major oversight in the film in relation to the broadcaster's journalistic policies on factual correctness, which corresponds to regulation 2.2 of the authority's broadcasting regulations.
"We issued an apology for this and we accept Ofcom's decision in full. We will adhere to the directive as soon as the date and wording are determined."
