The British broadcaster committed a "serious breach" of media regulations by omitting to mention that the presenter of a programme about Gaza was the offspring of a Hamas administrator, as determined by British broadcasting authority Ofcom.
An investigation by Ofcom into the programme Gaza: How to Survive a Warzone has found that the film was "substantially inaccurate".
The BBC's director general had already issued an apology, stating there had been "a serious error in relation to factual correctness".
The regulator has ordered the broadcaster to broadcast a evening declaration about its findings.
"Since this amounts to a serious breach of our code, we are ordering the BBC to transmit a statement of our findings against it on BBC Two at 9pm, with a schedule to be determined," it said.
'Risk to Damage Confidence'
The authority's report said: "The inquiry we conducted concluded that the programme's failure to disclose that the narrator's male guardian occupied a position in the Hamas-administered government was substantially inaccurate.
"Consequently that the public did not have critical information which may have been highly relevant to their assessment of the narrator and the details he provided.
"Confidence is at the center of the bond between a broadcaster and its audience, especially for a state-funded media outlet such as the BBC.
"This error had the potential to undermine the exceptionally strong degrees of confidence that audiences would have placed in a documentary produced by the BBC about the Gaza conflict."
The documentary was removed from the online platform in the month of February after the boy's familial connections were revealed, and in July an internal BBC review determined it infringed the organization's journalistic standards on accuracy.
A corporation official commented: "The Ofcom ruling is in agreement 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 reflects clause 2.2 of the authority's broadcasting regulations.
"We have apologised for this and we comply with Ofcom's decision in full. We will adhere to the sanction as soon as the timing and wording are confirmed."
