The British broadcaster was found to have committed a "major breach" of broadcasting rules by omitting to mention that the presenter of a film about Gaza was the child of a Hamas representative, according to regulatory body Ofcom.
An probe by Ofcom into the programme Gaza: How to Survive a Warzone has found that the documentary was "materially misleading".
The head of the BBC had previously apologised, noting there had been "a major oversight in relation to truthfulness".
Ofcom has instructed the broadcaster to transmit a prime-time announcement about its decisions.
"As this represents a serious breach of our rules, we are ordering the BBC to broadcast a statement of our findings 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 announcement said: "Our investigation concluded that the programme's failure to disclose that the presenter's father occupied a position in the Hamas-administered administration was materially misleading.
"This implied that the public did not have essential details which may have been highly relevant to their judgment of the presenter and the details he shared.
"Confidence is at the heart of the bond between a broadcaster and its audience, notably for a national broadcasting corporation such as the British Broadcasting Corporation.
"This oversight had the possibility to erode the exceptionally strong levels of credibility that viewers would have placed in a factual film from the broadcaster about the Israel-Gaza war."
The film was removed from iPlayer in last February after the boy's personal associations emerged, and in the month of July an internal BBC review determined it breached the broadcaster's journalistic standards on truthfulness.
A BBC spokesperson commented: "The Ofcom ruling is in line with the results of Peter Johnston's review, that there was a major oversight in the programme in relation to the broadcaster's journalistic policies on accuracy, which aligns with regulation 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we comply with the authority's determination in its entirety. We will follow the sanction as soon as the timing and wording are finalised."
