The BBC was found to have committed a "significant breach" of media regulations by failing to disclose that the presenter of a programme about the Gaza situation was the child of a Hamas representative, according to UK media regulator Ofcom.
An investigation by Ofcom into the documentary titled Gaza: How to Survive a Warzone has determined that the programme was "materially misleading".
The chief executive of the broadcaster had earlier expressed regret, noting there had been "a major oversight in relation to accuracy".
Ofcom has directed the broadcaster to transmit a prime-time announcement about its findings.
"Since this amounts to a serious breach of our rules, we are ordering the BBC to transmit a statement of our conclusions against it on BBC Two at 21:00, with a schedule to be confirmed," the statement read.
'Possibility to Erode Credibility'
The authority's announcement stated: "The inquiry we conducted found that the programme's omission to reveal that the presenter's father held a post in the Hamas-administered authority was materially misleading.
"Consequently that the audience did not have critical information which may have been very significant to their judgment of the narrator and the content he provided.
"Credibility is at the heart of the connection between a broadcaster and its viewers, notably for a public service broadcaster such as the BBC.
"This failing had the potential to damage the exceptionally strong levels of confidence that the public would have placed in a factual film from the broadcaster about the Israel-Gaza war."
The documentary was removed from the online platform in the month of February after the presenter's personal associations came to light, and in the month of July an corporation's own inquiry found it violated the broadcaster's content policies on accuracy.
A corporation official said: "The Ofcom ruling is in line with the results of the internal assessment, that there was a serious error in the programme in relation to the corporation's content standards on truthfulness, which aligns with Rule 2.2 of the authority's broadcasting regulations.
"We issued an apology for this and we comply with Ofcom's decision in full. We will adhere to the directive as soon as the schedule and wording are confirmed."
