The public service broadcaster was found to have committed a "major breach" of broadcasting rules by failing to disclose that the presenter of a documentary about Gaza was the son of a Hamas representative, as determined by regulatory body Ofcom.
An investigation by the media regulator into the programme Gaza: How to Survive a Warzone has found that the programme was "substantially inaccurate".
The head of the BBC had previously apologised, noting there had been "a significant failing in relation to truthfulness".
The authority has instructed the broadcaster to air a prime-time statement about its conclusions.
"Given this constitutes a serious breach of our code, we are ordering the corporation to air a message of our conclusions against it on BBC Two at 21:00, with a date to be confirmed," the statement read.
'Possibility to Undermine Trust'
The watchdog's statement stated: "Our investigation found that the documentary's lack of disclosure that the voice's parent occupied a position in the Hamas-administered government was significantly deceptive.
"It meant that the public did not have vital facts which may have been very significant to their judgment of the presenter and the details he shared.
"Credibility is at the center of the connection between a broadcaster and its viewers, especially for a national broadcasting corporation such as the BBC.
"This oversight had the possibility to undermine the exceptionally strong degrees of confidence that audiences would have invested in a factual film from the broadcaster about the Israel-Gaza war."
The film was withdrawn from the BBC's streaming service in the month of February after the narrator's familial connections came to light, and in July an corporation's own inquiry determined it breached the corporation's content policies on factual correctness.
A corporation official commented: "The Ofcom ruling is in agreement with the findings of the corporation's inquiry, that there was a significant failing in the programme in relation to the BBC's Editorial Guidelines on accuracy, which aligns with clause 2.2 of the authority's broadcasting regulations.
"We have apologised for this and we comply with Ofcom's decision in full. We will adhere to the directive as soon as the timing and wording are determined."
