The public service broadcaster was found to have committed a "major breach" of media regulations by failing to disclose that the narrator of a documentary about Gaza was the child of a Hamas administrator, as ruled by regulatory body Ofcom.
An probe by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has determined that the film was "significantly deceptive".
The head of the BBC had already issued an apology, saying there had been "a major oversight in relation to factual correctness".
The authority has directed the corporation to transmit a prime-time announcement about its conclusions.
"As this represents a major infringement of our regulations, we are instructing the broadcaster to transmit a statement of our findings against it on BBC Two at 9pm, with a schedule to be confirmed," the statement read.
'Potential to Undermine Confidence'
The regulator's report stated: "The inquiry we conducted concluded that the film's failure to disclose that the presenter's male guardian occupied a role in the Hamas-controlled authority was substantially inaccurate.
"Consequently that the viewers did not have essential details which may have been extremely pertinent to their judgment of the voice and the content he shared.
"Credibility is at the heart of the bond between a television network and its public, particularly for a public service broadcaster such as the British Broadcasting Corporation.
"This error had the possibility to undermine the exceptionally strong amounts of trust that audiences would have invested in a factual film from the broadcaster about the Gaza conflict."
The programme was withdrawn from iPlayer in February after the narrator's familial connections came to light, and in this past July an internal BBC review determined it breached the broadcaster's editorial guidelines on truthfulness.
A representative for the broadcaster commented: "The regulator's decision is in agreement with the conclusions of Peter Johnston's review, that there was a significant failing in the film in relation to the corporation's content standards on factual correctness, which aligns with clause 2.2 of the authority's broadcasting regulations.
"We have apologised for this and we agree with the authority's determination in complete. We will comply with the directive as soon as the date and language are confirmed."
