The British broadcaster was found to have committed a "major breach" of media regulations by omitting to mention that the narrator of a documentary about the Gaza conflict was the child of a Hamas administrator, as determined by regulatory body Ofcom.
An probe by Ofcom into Gaza: How to Survive a Warzone has found that the film was "significantly deceptive".
The head of the BBC had previously apologised, saying there had been "a major oversight in relation to factual correctness".
The regulator has ordered the broadcaster to broadcast a prime-time statement about its findings.
"As this represents a major infringement of our code, we are instructing the corporation to transmit a statement of our determinations against it on BBC Two at nine o'clock in the evening, with a schedule to be confirmed," it said.
'Possibility to Erode Credibility'
The watchdog's announcement said: "The inquiry we conducted found that the programme's failure to disclose that the narrator's male guardian held a post in the Hamas-controlled government was materially misleading.
"This implied that the audience did not have critical information which may have been highly relevant to their assessment of the voice and the content he presented.
"Trust is at the center of the connection between a broadcaster and its audience, notably for a public service broadcaster such as the BBC.
"This error had the risk to damage the very considerable degrees of confidence that viewers would have placed in a BBC factual programme about the conflict in Gaza."
The programme was removed from iPlayer in the month of February after the presenter's familial connections were revealed, and in this past July an internal BBC review concluded it breached the broadcaster's editorial guidelines on truthfulness.
A corporation official commented: "The Ofcom ruling is in agreement with the conclusions of the internal assessment, that there was a significant failing in the documentary in relation to the corporation's content standards on accuracy, which corresponds to Rule 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we agree with the regulator's ruling in full. We will comply with the sanction as soon as the schedule and language are finalised."
