The public service broadcaster committed a "major breach" of broadcasting rules by failing to disclose that the presenter of a film about the Gaza conflict was the offspring of a Hamas administrator, as determined by regulatory body Ofcom.
An investigation by the media regulator into the programme Gaza: How to Survive a Warzone has determined that the film was "significantly deceptive".
The chief executive of the broadcaster had already issued an apology, noting there had been "a major oversight in relation to accuracy".
The authority has ordered the corporation to air a evening declaration about its findings.
"Given this constitutes a major infringement of our regulations, we are instructing the corporation to transmit a announcement of our conclusions against it on the BBC's second channel at 9pm, with a date to be finalised," it said.
'Possibility to Damage Confidence'
The authority's statement said: "The inquiry we conducted found that the film's lack of disclosure that the voice's parent occupied a post in the Hamas-administered administration was materially misleading.
"This implied that the audience did not have essential details which may have been very significant to their judgment of the voice and the content he presented.
"Confidence is at the heart of the connection between a media organization and its viewers, especially for a state-funded media outlet such as the BBC.
"This oversight had the potential to damage the significantly high levels of trust that viewers would have invested in a documentary produced by the BBC about the Israel-Gaza war."
The film was withdrawn from iPlayer in February after the presenter's personal associations came to light, and in the month of July an corporation's own inquiry found it violated the organization's content policies on truthfulness.
A corporation official said: "The Ofcom ruling is in accordance with the findings of Peter Johnston's review, that there was a major oversight in the film in relation to the corporation's content standards on accuracy, which aligns with regulation 2.2 of the regulator's media standards.
"We expressed regret for this and we accept the authority's determination in complete. We will comply with the sanction as soon as the date and language are determined."
