The public service broadcaster was found to have committed a "serious breach" of media regulations by failing to disclose that the narrator of a film about the Gaza situation was the child of a Hamas representative, according to regulatory body Ofcom.
An investigation by Ofcom into the programme Gaza: How to Survive a Warzone has determined that the film was "significantly deceptive".
The head of the BBC had previously apologised, noting there had been "a major oversight in relation to accuracy".
The regulator has instructed the corporation to transmit a peak-time statement about its conclusions.
"As this represents a serious breach of our code, we are instructing the corporation to broadcast a announcement of our conclusions against it on BBC2 at 9pm, with a timing to be determined," it said.
'Possibility to Erode Confidence'
The regulator's report stated: "Our probe determined that the documentary's failure to disclose that the presenter's parent served in a post in the Hamas-run authority was materially misleading.
"It meant that the viewers did not have critical information which may have been very significant to their assessment of the presenter and the details he presented.
"Trust is at the heart of the bond between a media organization and its viewers, particularly for a public service broadcaster such as the British Broadcasting Corporation.
"This oversight had the risk to damage the very considerable degrees of trust that audiences would have invested in a BBC factual programme about the conflict in Gaza."
The film was withdrawn from the BBC's streaming service in the month of February after the boy's family links emerged, and in this past July an corporation's own inquiry found it infringed the organization's journalistic standards on accuracy.
A BBC spokesperson stated: "The regulator's decision is in line with the findings of the corporation's inquiry, that there was a significant failing in the documentary in relation to the corporation's content standards on truthfulness, which aligns with Rule 2.2 of the authority's broadcasting regulations.
"We have apologised for this and we comply with the regulator's ruling in full. We will follow the penalty as soon as the date and language are confirmed."
