The public service broadcaster was found to have committed a "major breach" of broadcasting rules by failing to disclose that the narrator of a programme about Gaza was the child of a Hamas administrator, as ruled by regulatory body Ofcom.
An investigation by Ofcom into Gaza: How to Survive a Warzone has concluded that the film was "substantially inaccurate".
The chief executive of the broadcaster had earlier expressed regret, stating there had been "a significant failing in relation to factual correctness".
The authority has directed the BBC to transmit a prime-time statement about its findings.
"Given this constitutes a significant violation of our regulations, we are instructing the broadcaster to broadcast a announcement of our determinations against it on BBC2 at nine o'clock in the evening, with a date to be determined," the statement read.
'Risk to Erode Confidence'
The regulator's report declared: "Our probe concluded that the documentary's failure to disclose that the voice's male guardian held a role in the Hamas-administered administration was substantially inaccurate.
"Consequently that the audience did not have vital facts which may have been very significant to their evaluation of the presenter and the information he presented.
"Confidence is at the core of the bond between a television network and its audience, especially for a national broadcasting corporation such as the BBC.
"This failing had the risk to undermine the significantly high levels of credibility that audiences would have put in a documentary produced by the BBC about the conflict in Gaza."
The programme was removed from the online platform in the month of February after the narrator's familial connections came to light, and in the month of July an broadcaster's internal assessment determined it infringed the organization's editorial guidelines on factual correctness.
A corporation official said: "The authority's determination is in accordance with the results of the internal assessment, that there was a significant failing in the documentary in relation to the corporation's content standards on accuracy, which reflects clause 2.2 of the regulator's media standards.
"We expressed regret for this and we agree with the regulator's ruling in its entirety. We will follow the penalty as soon as the timing and wording are determined."
