The public service broadcaster was found to have committed a "serious breach" of media regulations by omitting to mention that the voice of a documentary about the Gaza conflict was the child of a Hamas administrator, as ruled by regulatory body Ofcom.
An probe by the media regulator into the programme Gaza: How to Survive a Warzone has concluded that the film was "significantly deceptive".
The head of the BBC had already issued an apology, noting there had been "a serious error in relation to accuracy".
The authority has ordered the corporation to transmit a prime-time declaration about its findings.
"As this represents a major infringement of our regulations, we are ordering the BBC to broadcast a announcement of our findings against it on the BBC's second channel at 21:00, with a timing to be confirmed," the statement read.
'Potential to Damage Credibility'
The watchdog's report said: "Our investigation found that the programme's failure to disclose that the presenter's male guardian occupied a role in the Hamas-administered administration was significantly deceptive.
"It meant that the public did not have essential details which may have been very significant to their judgment of the narrator and the information he provided.
"Credibility is at the core of the connection between a media organization and its audience, particularly for a state-funded media outlet such as the BBC.
"This oversight had the risk to undermine the exceptionally strong amounts of trust that audiences would have placed in a factual film from the broadcaster about the Gaza conflict."
The documentary was removed from iPlayer in the month of February after the boy's family links emerged, and in this past July an corporation's own inquiry determined it violated the organization's editorial guidelines on factual correctness.
A representative for the broadcaster stated: "The authority's determination is in agreement with the results of the internal assessment, that there was a major oversight in the documentary in relation to the corporation's content standards on factual correctness, which aligns with clause 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we agree with the regulator's ruling in its entirety. We will comply with the directive as soon as the timing and language are confirmed."
