The British broadcaster engaged in a "serious breach" of media regulations by omitting to mention that the narrator of a documentary about the Gaza conflict was the son of a Hamas administrator, as ruled by regulatory body Ofcom.
An inquiry by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has concluded that the documentary was "substantially inaccurate".
The head of the BBC had earlier expressed regret, stating there had been "a serious error in relation to truthfulness".
The authority has ordered the broadcaster to transmit a prime-time announcement about its findings.
"Since this amounts to a serious breach of our code, we are ordering the broadcaster to transmit a announcement of our determinations against it on BBC2 at 9pm, with a schedule to be confirmed," the statement read.
'Risk to Undermine Credibility'
The regulator's announcement stated: "Our probe concluded that the programme's omission to reveal that the presenter's father held a position in the Hamas-administered administration was substantially inaccurate.
"It meant that the audience did not have critical information which may have been extremely pertinent to their judgment of the narrator and the content he presented.
"Trust is at the heart of the connection between a media organization and its audience, particularly for a national broadcasting corporation such as the BBC.
"This error had the potential to damage the significantly high degrees of trust that viewers would have put in a factual film from the broadcaster about the Gaza conflict."
The documentary was removed from iPlayer in last February after the narrator's family links came to light, and in July an broadcaster's internal assessment concluded it breached the organization's journalistic standards on truthfulness.
A corporation official commented: "The authority's determination is in line with the findings of the internal assessment, that there was a serious error in the documentary in relation to the corporation's content standards on accuracy, which corresponds to regulation 2.2 of the regulator's media standards.
"We expressed regret for this and we agree with Ofcom's decision in complete. We will adhere to the directive as soon as the date and wording are determined."
