The British broadcaster committed a "serious breach" of media regulations by failing to disclose that the presenter of a film about the Gaza conflict was the son of a Hamas administrator, as ruled by British broadcasting authority Ofcom.
An probe by Ofcom into Gaza: How to Survive a Warzone has found that the programme was "substantially inaccurate".
The chief executive of the broadcaster had previously apologised, saying there had been "a significant failing in relation to factual correctness".
The regulator has instructed the corporation to transmit a prime-time statement about its conclusions.
"Since this amounts to a significant violation of our code, we are ordering the BBC to transmit a announcement of our conclusions against it on BBC2 at nine o'clock in the evening, with a schedule to be confirmed," the statement read.
'Risk to Erode Confidence'
The authority's report stated: "Our probe found that the documentary's omission to reveal that the narrator's male guardian held a role in the Hamas-run authority was substantially inaccurate.
"This implied that the audience did not have critical information which may have been extremely pertinent to their evaluation of the voice and the information he provided.
"Confidence is at the center of the connection between a media organization and its public, especially for a public service broadcaster such as the British Broadcasting Corporation.
"This failing had the possibility to undermine the exceptionally strong degrees of trust that the public would have put in a BBC factual programme about the conflict in Gaza."
The documentary was removed from the online platform in the month of February after the presenter's family links were revealed, and in this past July an broadcaster's internal assessment found it infringed the corporation's editorial guidelines on accuracy.
A BBC spokesperson commented: "The regulator's decision is in line with the results of the internal assessment, that there was a major oversight in the documentary in relation to the broadcaster's journalistic policies on accuracy, which aligns with clause 2.2 of the regulator's media standards.
"We have apologised for this and we accept Ofcom's decision in its entirety. We will comply with the directive as soon as the schedule and wording are finalised."
