The public service broadcaster engaged in a "serious breach" of broadcasting rules by failing to disclose that the narrator of a documentary about the Gaza situation was the child of a Hamas official, as ruled by British broadcasting authority Ofcom.
An inquiry by the media regulator into Gaza: How to Survive a Warzone has concluded that the documentary was "materially misleading".
The head of the BBC had previously apologised, stating there had been "a major oversight in relation to truthfulness".
The regulator has instructed the broadcaster to broadcast a prime-time statement about its findings.
"Since this amounts to a major infringement of our code, we are directing the broadcaster to transmit a statement of our determinations against it on the BBC's second channel at nine o'clock in the evening, with a schedule to be determined," the statement read.
'Potential to Damage Credibility'
The regulator's statement stated: "Our investigation found that the film's omission to reveal that the voice's parent held a position in the Hamas-administered authority was substantially inaccurate.
"Consequently that the audience did not have critical information which may have been highly relevant to their evaluation of the presenter and the information he provided.
"Trust is at the core of the bond between a broadcaster and its viewers, notably for a state-funded media outlet such as the public broadcaster.
"This failing had the potential to damage the very considerable degrees of confidence that audiences would have put in a documentary produced by the BBC about the conflict in Gaza."
The film was removed from iPlayer in the month of February after the narrator's personal associations were revealed, and in July an corporation's own inquiry found it infringed the organization's content policies on factual correctness.
A corporation official said: "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 BBC's Editorial Guidelines on accuracy, which reflects Rule 2.2 of Ofcom's Broadcasting Code.
"We have apologised for this and we accept the regulator's ruling in its entirety. We will follow the penalty as soon as the timing and language are confirmed."
