The public service broadcaster was found to have committed a "serious breach" of media regulations by failing to disclose that the presenter of a programme about the Gaza situation was the child of a Hamas official, as determined by British broadcasting authority Ofcom.
An investigation by the media regulator into the programme Gaza: How to Survive a Warzone has concluded that the programme was "substantially inaccurate".
The BBC's director general had earlier expressed regret, noting there had been "a serious error in relation to factual correctness".
The authority has instructed the corporation to air a prime-time announcement about its findings.
"Given this constitutes a serious breach of our rules, we are instructing the BBC to broadcast a announcement of our determinations against it on BBC Two at 21:00, with a date to be determined," the regulator stated.
'Risk to Damage Credibility'
The authority's announcement said: "Our probe concluded that the programme's omission to reveal that the presenter's male guardian served in a role in the Hamas-controlled administration was significantly deceptive.
"It meant that the public did not have vital facts which may have been highly relevant to their assessment of the presenter and the content he shared.
"Credibility is at the heart of the bond between a broadcaster and its audience, especially for a state-funded media outlet such as the public broadcaster.
"This error had the potential to damage the exceptionally strong amounts of confidence that viewers would have invested 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 personal associations emerged, and in this past July an corporation's own inquiry concluded it violated the organization's journalistic standards on factual correctness.
A corporation official said: "The Ofcom ruling is in accordance with the results of the internal assessment, that there was a major oversight in the programme in relation to the BBC's Editorial Guidelines on factual correctness, which reflects regulation 2.2 of the regulator's media standards.
"We expressed regret for this and we agree with the authority's determination in complete. We will adhere to the sanction as soon as the date and language are determined."
