The BBC committed a "major breach" of broadcasting rules by failing to disclose that the narrator of a programme about the Gaza situation was the offspring of a Hamas administrator, as ruled by British broadcasting authority Ofcom.
An inquiry by Ofcom into the documentary titled Gaza: How to Survive a Warzone has concluded that the programme was "materially misleading".
The head of the BBC had previously apologised, noting there had been "a serious error in relation to accuracy".
Ofcom has ordered the corporation to broadcast a evening announcement about its findings.
"As this represents a serious breach of our regulations, we are ordering the BBC to air a announcement of our findings against it on the BBC's second channel at 21:00, with a schedule to be finalised," it said.
'Possibility to Undermine Credibility'
The authority's statement stated: "Our probe concluded that the film's omission to reveal that the presenter's father served in a role in the Hamas-administered administration was materially misleading.
"It meant that the public did not have critical information which may have been extremely pertinent to their evaluation of the voice and the content he presented.
"Trust is at the center of the connection between a media organization and its audience, especially for a public service broadcaster such as the British Broadcasting Corporation.
"This failing had the potential to undermine the significantly high degrees of confidence that the public would have put in a documentary produced by the BBC about the Israel-Gaza war."
The documentary was removed from iPlayer in February after the boy's familial connections came to light, and in the month of July an internal BBC review found it infringed the organization's editorial guidelines on truthfulness.
A BBC spokesperson said: "The regulator's decision is in accordance with the findings of the corporation's inquiry, that there was a serious error in the programme in relation to the broadcaster's journalistic policies on factual correctness, which corresponds to clause 2.2 of the authority's broadcasting regulations.
"We have apologised for this and we accept Ofcom's decision in its entirety. We will adhere to the sanction as soon as the date and wording are determined."
