The BBC committed a "major breach" of media regulations by failing to disclose that the voice of a documentary about the Gaza situation was the child of a Hamas representative, as ruled by UK media regulator Ofcom.
An investigation by Ofcom into the programme Gaza: How to Survive a Warzone has found that the film was "significantly deceptive".
The head of the BBC had earlier expressed regret, saying there had been "a significant failing in relation to accuracy".
Ofcom has ordered the broadcaster to broadcast a peak-time announcement about its decisions.
"Since this amounts to a significant violation of our code, we are ordering the BBC to air a statement of our conclusions against it on BBC2 at 21:00, with a timing to be determined," it said.
'Possibility to Undermine Credibility'
The authority's statement stated: "Our investigation concluded that the documentary's lack of disclosure that the narrator's parent held a role in the Hamas-run government was substantially inaccurate.
"It meant that the viewers did not have essential details which may have been highly relevant to their judgment of the narrator and the content he provided.
"Confidence is at the center of the connection between a media organization and its audience, especially for a state-funded media outlet such as the British Broadcasting Corporation.
"This oversight had the possibility to erode the very considerable levels of credibility that audiences would have put in a documentary produced by the BBC about the Gaza conflict."
The film was withdrawn from the BBC's streaming service in the month of February after the presenter's family links were revealed, and in this past July an broadcaster's internal assessment concluded it infringed the organization's editorial guidelines on truthfulness.
A BBC spokesperson stated: "The regulator's decision is in accordance with the conclusions of the corporation's inquiry, that there was a major oversight in the film in relation to the broadcaster's journalistic policies on truthfulness, which reflects clause 2.2 of the authority's broadcasting regulations.
"We issued an apology for this and we agree with the authority's determination in complete. We will adhere to the directive as soon as the timing and language are confirmed."
