The public service broadcaster was found to have committed a "major breach" of broadcasting rules by not revealing that the presenter of a film about the Gaza conflict was the offspring of a Hamas official, according to regulatory body Ofcom.
An investigation by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has found that the programme was "substantially inaccurate".
The head of the BBC had already issued an apology, noting there had been "a significant failing in relation to factual correctness".
The regulator has instructed the corporation to transmit a prime-time announcement about its findings.
"Given this constitutes a significant violation of our rules, we are directing the BBC to transmit a message of our findings against it on the BBC's second channel at 21:00, with a schedule to be determined," the regulator stated.
'Possibility to Undermine Credibility'
The authority's statement declared: "Our investigation found that the programme's omission to reveal that the presenter's male guardian held a post in the Hamas-run authority was substantially inaccurate.
"This implied that the viewers did not have essential details which may have been extremely pertinent to their assessment of the voice and the information he presented.
"Trust is at the core of the relationship between a media organization and its viewers, particularly for a state-funded media outlet such as the public broadcaster.
"This error had the risk to damage the exceptionally strong levels of confidence that the public would have put in a documentary produced by the BBC about the Gaza conflict."
The film was withdrawn from iPlayer in the month of February after the presenter's family links came to light, and in this past July an broadcaster's internal assessment found it infringed the broadcaster's journalistic standards on accuracy.
A corporation official stated: "The Ofcom ruling is in line with the results of the corporation's inquiry, that there was a significant failing in the film in relation to the BBC's Editorial Guidelines on factual correctness, which reflects clause 2.2 of the regulator's media standards.
"We expressed regret for this and we accept Ofcom's decision in full. We will follow the sanction as soon as the date and wording are finalised."
