The British broadcaster committed a "significant breach" of broadcasting rules by omitting to mention that the voice of a documentary about the Gaza situation was the child of a Hamas administrator, as determined by UK media regulator Ofcom.
An probe by the broadcasting watchdog into Gaza: How to Survive a Warzone has determined that the programme was "materially misleading".
The head of the BBC had already issued an apology, stating there had been "a serious error in relation to accuracy".
The regulator has instructed the BBC to broadcast a prime-time announcement about its decisions.
"As this represents a serious breach of our code, we are ordering the broadcaster to broadcast a statement of our findings against it on the BBC's second channel at 21:00, with a schedule to be determined," the statement read.
'Risk to Damage Confidence'
The regulator's announcement stated: "Our investigation determined that the film's failure to disclose that the voice's father served in a role in the Hamas-controlled authority was substantially inaccurate.
"It meant that the audience did not have vital facts which may have been highly relevant to their evaluation of the voice and the information he presented.
"Credibility is at the heart of the bond between a media organization and its audience, particularly for a state-funded media outlet such as the BBC.
"This failing had the risk to damage the exceptionally strong degrees of confidence that audiences would have put in a documentary produced by the BBC about the Israel-Gaza war."
The documentary was pulled from iPlayer in last February after the narrator's family links emerged, and in the month of July an corporation's own inquiry determined it breached the broadcaster's content policies on factual correctness.
A BBC spokesperson stated: "The authority's determination is in accordance with the conclusions of Peter Johnston's review, that there was a serious error in the film in relation to the broadcaster's journalistic policies on truthfulness, which reflects Rule 2.2 of the regulator's media standards.
"We have apologised for this and we comply with the authority's determination in full. We will comply with the sanction as soon as the date and language are confirmed."
