The British broadcaster engaged in a "serious breach" of broadcasting rules by failing to disclose that the narrator of a programme about Gaza was the offspring of a Hamas official, as determined by British broadcasting authority Ofcom.
An probe by Ofcom into the programme Gaza: How to Survive a Warzone has found that the documentary was "substantially inaccurate".
The chief executive of the broadcaster had previously apologised, saying there had been "a major oversight in relation to truthfulness".
The authority has directed the BBC to air a evening statement about its conclusions.
"Since this amounts to a major infringement of our regulations, we are instructing the corporation to air a message of our determinations against it on BBC2 at nine o'clock in the evening, with a schedule to be confirmed," it said.
'Risk to Damage Credibility'
The authority's announcement stated: "Our investigation concluded that the programme's omission to reveal that the presenter's male guardian served in a post in the Hamas-controlled authority was materially misleading.
"It meant that the audience did not have vital facts which may have been very significant to their assessment of the voice and the content he presented.
"Trust is at the heart of the connection between a media organization and its viewers, notably for a state-funded media outlet such as the public broadcaster.
"This oversight had the potential to damage the exceptionally strong levels of confidence that the public would have invested in a BBC factual programme about the Gaza conflict."
The programme was withdrawn from the online platform in February after the boy's familial connections emerged, and in the month of July an broadcaster's internal assessment concluded it violated the broadcaster's journalistic standards on factual correctness.
A corporation official said: "The regulator's decision is in agreement with the conclusions of the corporation's inquiry, that there was a significant failing in the documentary in relation to the broadcaster's journalistic policies on accuracy, which reflects clause 2.2 of Ofcom's Broadcasting Code.
"We expressed regret for this and we agree with Ofcom's decision in full. We will adhere to the directive as soon as the date and wording are confirmed."
