The British broadcaster was found to have committed a "major breach" of media regulations by omitting to mention that the narrator of a programme about Gaza was the son of a Hamas representative, according to British broadcasting authority Ofcom.
An inquiry by Ofcom into Gaza: How to Survive a Warzone has concluded that the film was "materially misleading".
The chief executive of the broadcaster had previously apologised, stating there had been "a significant failing in relation to factual correctness".
The authority has instructed the BBC to transmit a prime-time declaration about its decisions.
"As this represents a serious breach of our regulations, we are directing the broadcaster to transmit a statement of our determinations against it on BBC2 at 9pm, with a timing to be determined," the regulator stated.
'Potential to Damage Confidence'
The watchdog's announcement said: "The inquiry we conducted determined that the programme's lack of disclosure that the presenter's father served in a position in the Hamas-controlled authority was materially misleading.
"This implied that the audience did not have essential details which may have been highly relevant to their assessment of the narrator and the content he shared.
"Credibility is at the center of the connection between a broadcaster and its viewers, especially for a national broadcasting corporation such as the BBC.
"This oversight had the possibility to damage the significantly high levels of confidence that viewers would have put in a factual film from the broadcaster about the Israel-Gaza war."
The programme was pulled from the online platform in last February after the boy's familial connections were revealed, and in this past July an corporation's own inquiry determined it breached the corporation's content policies on factual correctness.
A corporation official said: "The authority's determination is in accordance with the conclusions of Peter Johnston's review, that there was a significant failing in the film in relation to the corporation's content standards on accuracy, which aligns with Rule 2.2 of Ofcom's Broadcasting Code.
"We expressed regret for this and we agree with Ofcom's decision in full. We will follow the directive as soon as the timing and wording are determined."