The public service broadcaster was found to have committed a "significant breach" of broadcasting rules by failing to disclose that the presenter of a film about the Gaza situation was the son of a Hamas representative, as ruled by UK media regulator Ofcom.
An probe by Ofcom into Gaza: How to Survive a Warzone has determined that the programme was "substantially inaccurate".
The head of the BBC had earlier expressed regret, stating there had been "a significant failing in relation to truthfulness".
The authority has ordered the broadcaster to transmit a prime-time announcement about its conclusions.
"As this represents a significant violation of our regulations, we are directing the BBC to transmit a message of our conclusions against it on BBC2 at nine o'clock in the evening, with a timing to be confirmed," the regulator stated.
'Potential to Damage Trust'
The regulator's announcement declared: "Our investigation found that the documentary's omission to reveal that the narrator's father held a position in the Hamas-administered authority was substantially inaccurate.
"This implied that the audience did not have essential details which may have been extremely pertinent to their assessment of the narrator and the details he provided.
"Credibility is at the core of the connection between a television network and its public, notably for a public service broadcaster such as the BBC.
"This error had the potential to undermine the very considerable degrees of confidence that viewers would have invested in a BBC factual programme about the Gaza conflict."
The film was withdrawn from the online platform in February after the presenter's family links emerged, and in the month of July an broadcaster's internal assessment found it breached the corporation's journalistic standards on factual correctness.
A BBC spokesperson stated: "The Ofcom ruling is in accordance with the conclusions of the internal assessment, that there was a significant failing in the film in relation to the corporation's content standards on truthfulness, which reflects Rule 2.2 of the regulator's media standards.
"We have apologised for this and we agree with the authority's determination in full. We will adhere to the sanction as soon as the schedule and language are finalised."
