The public service broadcaster was found to have committed a "serious breach" of media regulations by not revealing that the voice of a programme about Gaza was the son of a Hamas official, as determined by regulatory body Ofcom.
An probe by Ofcom into Gaza: How to Survive a Warzone has concluded that the documentary was "materially misleading".
The chief executive of the broadcaster had already issued an apology, saying there had been "a serious error in relation to truthfulness".
The regulator has directed the corporation to transmit a evening announcement about its conclusions.
"Given this constitutes a significant violation of our code, we are ordering the BBC to broadcast a statement of our findings against it on BBC2 at nine o'clock in the evening, with a timing to be finalised," the statement read.
'Risk to Erode Credibility'
The regulator's report stated: "Our probe determined that the programme's failure to disclose that the narrator's male guardian served in a position in the Hamas-controlled administration was materially misleading.
"Consequently that the public did not have vital facts which may have been highly relevant to their assessment of the voice and the content he shared.
"Trust is at the heart of the bond between a television network and its viewers, especially for a state-funded media outlet such as the BBC.
"This oversight had the potential to damage the significantly high amounts of trust that the public would have placed in a BBC factual programme about the Israel-Gaza war."
The programme was pulled from the online platform in the month of February after the boy's familial connections came to light, and in this past July an broadcaster's internal assessment determined it violated the organization's editorial guidelines on factual correctness.
A representative for the broadcaster stated: "The regulator's decision is in accordance 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 accuracy, which corresponds to regulation 2.2 of the regulator's media standards.
"We expressed regret for this and we agree with the authority's determination in full. We will follow the directive as soon as the date and wording are determined."
