The public service broadcaster was found to have committed a "serious breach" of broadcasting rules by omitting to mention that the voice of a documentary about the Gaza conflict was the child of a Hamas administrator, according to UK media regulator Ofcom.
An probe by the media regulator into Gaza: How to Survive a Warzone has found that the documentary was "significantly deceptive".
The BBC's director general had previously apologised, saying there had been "a major oversight in relation to accuracy".
The authority has directed the corporation to air a evening statement about its decisions.
"As this represents a serious breach of our regulations, we are directing the broadcaster to broadcast a message of our findings against it on BBC Two at nine o'clock in the evening, with a timing to be confirmed," it said.
'Possibility to Undermine Confidence'
The regulator's statement stated: "The inquiry we conducted concluded that the film's lack of disclosure that the narrator's father served in a post in the Hamas-controlled government was substantially inaccurate.
"This implied that the viewers did not have vital facts which may have been highly relevant to their evaluation of the presenter and the details he provided.
"Confidence is at the heart of the bond between a media organization and its viewers, particularly for a state-funded media outlet such as the British Broadcasting Corporation.
"This error had the risk to erode the very considerable levels of credibility that the public would have placed in a documentary produced by the BBC about the conflict in Gaza."
The film was withdrawn from the online platform in February after the boy's personal associations emerged, and in the month of July an internal BBC review determined it breached the broadcaster's content policies on factual correctness.
A BBC spokesperson stated: "The Ofcom ruling is in agreement with the results of Peter Johnston's review, that there was a serious error in the film in relation to the broadcaster's journalistic policies on truthfulness, which reflects Rule 2.2 of the authority's broadcasting regulations.
"We issued an apology for this and we comply with Ofcom's decision in full. We will follow the directive as soon as the date and wording are finalised."
