The British broadcaster engaged in a "serious breach" of industry standards by omitting to mention that the presenter of a film about Gaza was the offspring of a Hamas administrator, according to UK media regulator Ofcom.
An inquiry by the media regulator into the programme Gaza: How to Survive a Warzone has found that the documentary was "significantly deceptive".
The head of the BBC had previously apologised, stating there had been "a serious error in relation to factual correctness".
The authority has ordered the broadcaster to air a evening declaration about its findings.
"Given this constitutes a serious breach of our rules, we are ordering the corporation to air a message of our conclusions against it on the BBC's second channel at 9pm, with a schedule to be confirmed," the statement read.
'Risk to Undermine Credibility'
The regulator's announcement stated: "The inquiry we conducted determined that the documentary's lack of disclosure that the presenter's male guardian occupied a position in the Hamas-administered authority was materially misleading.
"This implied that the audience did not have critical information which may have been extremely pertinent to their evaluation of the narrator and the content he presented.
"Credibility is at the core of the connection between a media organization and its audience, especially for a state-funded media outlet such as the BBC.
"This error had the potential to damage the significantly high amounts of confidence that viewers would have put in a documentary produced by the BBC about the Gaza conflict."
The film was pulled from the BBC's streaming service in the month of February after the boy's personal associations emerged, and in July an corporation's own inquiry determined it infringed the corporation's content policies on factual correctness.
A corporation official stated: "The Ofcom ruling is in line with the findings of the corporation's inquiry, that there was a significant failing in the programme in relation to the broadcaster's journalistic policies on accuracy, which corresponds to Rule 2.2 of the authority's broadcasting regulations.
"We have apologised for this and we accept the authority's determination in full. We will comply with the sanction as soon as the schedule and language are confirmed."
