The British broadcaster was found to have committed a "major breach" of broadcasting rules by omitting to mention that the voice of a documentary about the Gaza situation was the offspring of a Hamas administrator, as ruled by British broadcasting authority Ofcom.
An investigation by the media regulator into the programme Gaza: How to Survive a Warzone has determined that the programme was "materially misleading".
The BBC's director general had earlier expressed regret, stating there had been "a major oversight in relation to accuracy".
The authority has ordered the BBC to transmit a peak-time declaration about its decisions.
"Since this amounts to a serious breach of our code, we are directing the broadcaster to transmit a message of our findings against it on BBC2 at 9pm, with a timing to be determined," it said.
'Risk to Erode Credibility'
The authority's statement stated: "Our investigation concluded that the film's omission to reveal that the voice's male guardian occupied a position in the Hamas-administered government was materially misleading.
"This implied that the audience did not have essential details which may have been highly relevant to their judgment of the narrator and the information he provided.
"Confidence is at the core of the relationship between a media organization and its audience, particularly for a national broadcasting corporation such as the British Broadcasting Corporation.
"This failing had the possibility to undermine the very considerable amounts of trust that viewers would have invested in a factual film from the broadcaster about the conflict in Gaza."
The film was withdrawn from the online platform in the month of February after the presenter's family links emerged, and in the month of July an internal BBC review concluded it violated the corporation's content policies on factual correctness.
A representative for the broadcaster stated: "The regulator's decision is in agreement with the findings of the corporation's inquiry, that there was a serious error in the documentary in relation to the corporation's content standards on factual correctness, which aligns with Rule 2.2 of the regulator's media standards.
"We issued an apology for this and we accept Ofcom's decision in complete. We will comply with the penalty as soon as the timing and language are determined."
