The BBC was found to have committed a "serious breach" of broadcasting rules by failing to disclose that the voice of a film about the Gaza situation was the offspring of a Hamas official, as determined by British broadcasting authority Ofcom.
An probe by Ofcom into the documentary titled Gaza: How to Survive a Warzone has concluded that the documentary was "substantially inaccurate".
The head of the BBC had previously apologised, noting there had been "a serious error in relation to factual correctness".
Ofcom has instructed the corporation to broadcast a peak-time statement about its conclusions.
"As this represents a major infringement of our code, we are directing the corporation to broadcast a message of our findings against it on BBC2 at 21:00, with a schedule to be confirmed," it said.
'Risk to Undermine Confidence'
The authority's report said: "Our probe concluded that the documentary's failure to disclose that the narrator's father occupied a post in the Hamas-run administration was significantly deceptive.
"It meant that the viewers did not have vital facts which may have been extremely pertinent to their judgment of the narrator and the content he shared.
"Confidence is at the center of the connection between a broadcaster and its audience, particularly for a state-funded media outlet such as the British Broadcasting Corporation.
"This error had the potential to damage the very considerable levels of confidence that the public would have invested in a factual film from the broadcaster about the conflict in Gaza."
The documentary was withdrawn from the BBC's streaming service in February after the boy's personal associations emerged, and in the month of July an broadcaster's internal assessment determined it infringed the broadcaster's content policies on truthfulness.
A corporation official said: "The Ofcom ruling is in line with the conclusions of the internal assessment, that there was a serious error in the documentary in relation to the BBC's Editorial Guidelines on factual correctness, which aligns with regulation 2.2 of the regulator's media standards.
"We issued an apology for this and we comply with the authority's determination in its entirety. We will adhere to the sanction as soon as the date and language are finalised."
