The BBC committed a "major breach" of broadcasting rules by failing to disclose that the voice of a film about the Gaza conflict was the child of a Hamas official, as ruled by UK media regulator Ofcom.
An inquiry by the media regulator into the documentary titled Gaza: How to Survive a Warzone has determined that the film was "substantially inaccurate".
The head of the BBC had already issued an apology, saying there had been "a serious error in relation to accuracy".
The authority has instructed the corporation to transmit a evening statement about its decisions.
"Since this amounts to a significant violation of our rules, we are directing the corporation to broadcast a message of our determinations against it on BBC2 at 21:00, with a date to be determined," the statement read.
'Risk to Damage Confidence'
The authority's statement declared: "The inquiry we conducted determined that the film's lack of disclosure that the presenter's male guardian held a role in the Hamas-controlled administration was substantially inaccurate.
"Consequently that the public did not have essential details which may have been very significant to their judgment of the presenter and the information he shared.
"Credibility is at the heart of the connection between a broadcaster and its audience, especially for a public service broadcaster such as the public broadcaster.
"This error had the potential to damage the very considerable amounts of confidence that audiences would have placed in a factual film from the broadcaster about the Israel-Gaza war."
The film was withdrawn from iPlayer in the month of February after the presenter's family links came to light, and in the month of July an internal BBC review concluded it infringed the broadcaster's content policies on truthfulness.
A representative for the broadcaster said: "The authority's determination is in agreement with the conclusions of the corporation's inquiry, that there was a serious error in the documentary in relation to the broadcaster's journalistic policies on accuracy, which aligns with Rule 2.2 of the authority's broadcasting regulations.
"We have apologised for this and we comply with Ofcom's decision in full. We will follow the sanction as soon as the schedule and language are confirmed."
