The BBC was found to have committed a "significant breach" of broadcasting rules by not revealing that the voice of a documentary about the Gaza conflict was the offspring of a Hamas official, as determined by regulatory body Ofcom.
An inquiry by the media regulator into the documentary titled Gaza: How to Survive a Warzone has determined that the film was "significantly deceptive".
The chief executive of the broadcaster had earlier expressed regret, noting there had been "a significant failing in relation to truthfulness".
Ofcom has ordered the broadcaster to transmit a evening statement about its findings.
"Since this amounts to a significant violation of our rules, we are directing the BBC to air a statement of our findings against it on BBC Two at 9pm, with a schedule to be determined," it said.
'Risk to Undermine Trust'
The regulator's announcement stated: "Our investigation found that the documentary's omission to reveal that the presenter's male guardian served in a position in the Hamas-administered government was materially misleading.
"It meant that the audience did not have essential details which may have been highly relevant to their evaluation of the narrator and the information he shared.
"Credibility is at the center of the bond between a media organization and its viewers, notably for a national broadcasting corporation such as the British Broadcasting Corporation.
"This oversight had the possibility to damage the significantly high levels of trust that audiences would have placed in a BBC factual programme about the Gaza conflict."
The film was pulled from iPlayer in the month of February after the boy's familial connections emerged, and in July an corporation's own inquiry determined it breached the organization's journalistic standards on accuracy.
A corporation official stated: "The Ofcom ruling is in line with the findings of the corporation's inquiry, that there was a serious error in the programme in relation to the corporation's content standards on truthfulness, which aligns with regulation 2.2 of the regulator's media standards.
"We expressed regret for this and we accept the regulator's ruling in full. We will adhere to the directive as soon as the schedule and language are confirmed."
