The British broadcaster committed a "significant breach" of industry standards by omitting to mention that the voice of a documentary about the Gaza conflict was the son of a Hamas administrator, as determined by British broadcasting authority Ofcom.
An investigation by the broadcasting watchdog into Gaza: How to Survive a Warzone has concluded that the programme was "substantially inaccurate".
The BBC's director general had earlier expressed regret, saying there had been "a major oversight in relation to factual correctness".
The authority has instructed the BBC to air a evening declaration about its decisions.
"As this represents a significant violation of our code, we are directing the broadcaster to transmit a message of our conclusions against it on BBC Two at 9pm, with a date to be determined," the regulator stated.
'Possibility to Erode Credibility'
The regulator's statement stated: "The inquiry we conducted concluded that the documentary's omission to reveal that the presenter's parent held a position in the Hamas-run authority was materially misleading.
"This implied that the viewers did not have essential details which may have been extremely pertinent to their assessment of the voice and the details he presented.
"Trust is at the core of the bond between a broadcaster and its audience, particularly for a public service broadcaster such as the British Broadcasting Corporation.
"This error had the potential to damage the significantly high degrees of confidence that audiences would have placed in a documentary produced by the BBC about the conflict in Gaza."
The film was withdrawn from the online platform in last February after the boy's personal associations emerged, and in this past July an corporation's own inquiry concluded it infringed the organization's editorial guidelines on truthfulness.
A corporation official commented: "The regulator's decision is in accordance with the conclusions of the corporation's inquiry, that there was a serious error in the documentary in relation to the broadcaster's journalistic policies on accuracy, which aligns with Rule 2.2 of the regulator's media standards.
"We have apologised for this and we comply with Ofcom's decision in complete. We will comply with the penalty as soon as the date and wording are confirmed."
