The BBC was found to have committed a "serious breach" of media regulations by failing to disclose that the voice of a programme about the Gaza conflict was the offspring of a Hamas official, according to British broadcasting authority Ofcom.
An inquiry by the broadcasting watchdog into Gaza: How to Survive a Warzone has concluded that the film was "significantly deceptive".
The BBC's director general had already issued an apology, stating there had been "a serious error in relation to truthfulness".
The authority has directed the BBC to air a peak-time declaration about its decisions.
"Since this amounts to a serious breach of our code, we are ordering the corporation to transmit a statement of our findings against it on BBC Two at nine o'clock in the evening, with a timing to be confirmed," the regulator stated.
'Risk to Erode Confidence'
The regulator's statement declared: "The inquiry we conducted determined that the programme's lack of disclosure that the voice's father occupied a role in the Hamas-administered authority was materially misleading.
"Consequently that the public did not have vital facts which may have been extremely pertinent to their judgment of the voice and the information he presented.
"Credibility is at the core of the connection between a television network and its public, especially for a national broadcasting corporation such as the British Broadcasting Corporation.
"This oversight had the potential to undermine the significantly high degrees of confidence that the public would have put in a documentary produced by the BBC about the Israel-Gaza war."
The programme was pulled from iPlayer in last February after the boy's personal associations emerged, and in July an broadcaster's internal assessment concluded it breached the corporation's content policies on accuracy.
A corporation official said: "The regulator's decision is in line with the findings of Peter Johnston's review, that there was a significant failing in the documentary in relation to the corporation's content standards on accuracy, which reflects Rule 2.2 of the regulator's media standards.
"We expressed regret for this and we accept the authority's determination in complete. We will comply with the directive as soon as the timing and wording are determined."
