The British broadcaster committed a "serious breach" of broadcasting rules by failing to disclose that the presenter of a film about the Gaza conflict was the offspring of a Hamas representative, as ruled by regulatory body Ofcom.
An probe by Ofcom into Gaza: How to Survive a Warzone has determined that the documentary was "substantially inaccurate".
The chief executive of the broadcaster had already issued an apology, saying there had been "a major oversight in relation to accuracy".
The authority has ordered the BBC to transmit a prime-time announcement about its decisions.
"Given this constitutes a serious breach of our rules, we are directing the corporation to broadcast a message of our determinations against it on BBC2 at nine o'clock in the evening, with a schedule to be confirmed," it said.
'Possibility to Undermine Trust'
The watchdog's report said: "Our investigation determined that the film's failure to disclose that the voice's male guardian held a position in the Hamas-administered authority was substantially inaccurate.
"Consequently that the viewers did not have vital facts which may have been very significant to their assessment of the presenter and the content he presented.
"Trust is at the core of the connection between a television network and its viewers, especially for a public service broadcaster such as the public broadcaster.
"This error had the risk to damage the significantly high degrees of confidence that the public would have placed in a BBC factual programme about the Gaza conflict."
The film was removed from the online platform in last February after the boy's personal associations came to light, and in this past July an broadcaster's internal assessment determined it breached the organization's journalistic standards on factual correctness.
A corporation official said: "The Ofcom ruling is in agreement with the findings of the internal assessment, that there was a major oversight in the documentary in relation to the broadcaster's journalistic policies on accuracy, which corresponds to clause 2.2 of Ofcom's Broadcasting Code.
"We expressed regret for this and we accept the authority's determination in its entirety. We will comply with the directive as soon as the date and wording are determined."
