The public service broadcaster committed a "serious breach" of broadcasting rules by omitting to mention that the narrator of a documentary about the Gaza situation was the son of a Hamas official, as determined by UK media regulator Ofcom.
An inquiry by Ofcom into Gaza: How to Survive a Warzone has concluded that the programme was "significantly deceptive".
The BBC's director general had already issued an apology, noting there had been "a major oversight in relation to accuracy".
The regulator has directed the BBC to broadcast a prime-time statement about its decisions.
"As this represents a serious breach of our code, we are instructing the BBC to broadcast a statement of our determinations against it on BBC Two at nine o'clock in the evening, with a schedule to be determined," it said.
'Risk to Undermine Confidence'
The authority's statement stated: "The inquiry we conducted concluded that the programme's failure to disclose that the narrator's male guardian held a post in the Hamas-controlled authority was significantly deceptive.
"Consequently that the viewers did not have critical information which may have been highly relevant to their judgment of the voice and the information he provided.
"Credibility is at the core of the bond between a television network and its public, notably for a state-funded media outlet such as the British Broadcasting Corporation.
"This failing had the potential to erode the exceptionally strong levels of confidence that the public would have invested in a factual film from the broadcaster about the Israel-Gaza war."
The film was removed from iPlayer in the month of February after the boy's familial connections were revealed, and in this past July an corporation's own inquiry determined it infringed the organization's journalistic standards on truthfulness.
A BBC spokesperson commented: "The regulator's decision is in line with the results of Peter Johnston's review, that there was a serious error in the documentary in relation to the BBC's Editorial Guidelines on truthfulness, which corresponds to Rule 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we comply with the regulator's ruling in complete. We will comply with the directive as soon as the timing and language are determined."
