The British broadcaster was found to have committed a "significant breach" of media regulations by not revealing that the presenter of a film about the Gaza conflict was the son of a Hamas administrator, as determined by regulatory body Ofcom.
An probe by the media regulator into Gaza: How to Survive a Warzone has determined that the documentary was "significantly deceptive".
The chief executive of the broadcaster had already issued an apology, saying there had been "a significant failing in relation to factual correctness".
Ofcom has instructed the corporation to transmit a prime-time declaration about its findings.
"Since this amounts to a serious breach of our code, we are directing the corporation to air a announcement of our findings against it on BBC2 at nine o'clock in the evening, with a timing to be finalised," the regulator stated.
'Potential to Damage Trust'
The authority's announcement said: "The inquiry we conducted concluded that the film's failure to disclose that the narrator's father served in a role in the Hamas-administered government was significantly deceptive.
"Consequently that the public did not have critical information which may have been highly relevant to their evaluation of the voice and the details 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 public broadcaster.
"This oversight had the risk to damage the exceptionally strong amounts of trust that the public would have invested in a BBC factual programme about the Gaza conflict."
The documentary was withdrawn from the online platform in February after the presenter's personal associations came to light, and in July an broadcaster's internal assessment found it infringed the broadcaster's journalistic standards on truthfulness.
A corporation official commented: "The Ofcom ruling is in accordance with the conclusions of the internal assessment, that there was a significant failing in the documentary in relation to the BBC's Editorial Guidelines on accuracy, which reflects regulation 2.2 of the regulator's media standards.
"We have apologised for this and we agree with Ofcom's decision in its entirety. We will follow the directive as soon as the date and wording are confirmed."
