The public service broadcaster committed a "significant breach" of media regulations by omitting to mention that the presenter of a documentary about Gaza was the child of a Hamas administrator, as ruled by British broadcasting authority Ofcom.
An investigation by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has determined that the programme was "materially misleading".
The head of the BBC had already issued an apology, noting there had been "a serious error in relation to factual correctness".
Ofcom has ordered the broadcaster to broadcast a prime-time announcement about its findings.
"Given this constitutes a significant violation of our code, we are instructing the BBC to broadcast a message of our findings against it on BBC2 at 9pm, with a timing to be determined," it said.
'Possibility to Erode Confidence'
The regulator's announcement stated: "Our investigation determined that the documentary's omission to reveal that the voice's male guardian served in a role in the Hamas-administered authority was materially misleading.
"Consequently that the audience did not have vital facts which may have been very significant to their judgment of the narrator and the content he presented.
"Confidence is at the heart of the relationship between a television network and its audience, particularly for a national broadcasting corporation such as the British Broadcasting Corporation.
"This error had the risk to damage the significantly high levels of confidence that the public would have placed in a BBC factual programme about the Gaza conflict."
The documentary was removed from the BBC's streaming service in February after the narrator's family links emerged, and in July an internal BBC review found it breached the organization's editorial guidelines on truthfulness.
A BBC spokesperson commented: "The authority's determination is in line with the conclusions of Peter Johnston's review, that there was a major oversight in the documentary in relation to the corporation's content standards on factual correctness, which corresponds to Rule 2.2 of the regulator's media standards.
"We issued an apology for this and we comply with the authority's determination in full. We will follow the directive as soon as the timing and wording are finalised."
