The public service broadcaster was found to have committed a "significant breach" of media regulations by not revealing that the narrator of a programme about the Gaza conflict was the offspring of a Hamas administrator, according to regulatory body Ofcom.
An probe by the media regulator into the documentary titled Gaza: How to Survive a Warzone has concluded that the film was "significantly deceptive".
The BBC's director general had previously apologised, saying there had been "a major oversight in relation to factual correctness".
Ofcom has ordered the broadcaster to broadcast a evening announcement about its findings.
"Since this amounts to a major infringement of our code, we are instructing the corporation to transmit a message of our conclusions against it on the BBC's second channel at 21:00, with a schedule to be confirmed," the statement read.
'Risk to Undermine Confidence'
The authority's report stated: "Our probe concluded that the documentary's omission to reveal that the voice's parent occupied a role in the Hamas-run government was substantially inaccurate.
"This implied that the viewers did not have vital facts which may have been highly relevant to their assessment of the narrator and the information he provided.
"Credibility is at the center of the connection between a media organization and its viewers, especially for a public service broadcaster such as the BBC.
"This error had the potential to undermine the exceptionally strong levels of trust that viewers would have put in a documentary produced by the BBC about the Israel-Gaza war."
The film was withdrawn from the BBC's streaming service in February after the boy's personal associations came to light, and in the month of July an corporation's own inquiry concluded it infringed the corporation's content policies on truthfulness.
A representative for the broadcaster stated: "The authority's determination is in line with the findings of Peter Johnston's review, that there was a serious error in the film in relation to the corporation's content standards on accuracy, which corresponds to regulation 2.2 of the regulator's media standards.
"We have apologised for this and we accept the regulator's ruling in full. We will follow the directive as soon as the schedule and wording are confirmed."
