The BBC was found to have committed a "major breach" of media regulations by failing to disclose that the presenter of a documentary about Gaza was the child of a Hamas representative, as ruled by regulatory body Ofcom.
An probe by Ofcom into Gaza: How to Survive a Warzone has found that the documentary was "substantially inaccurate".
The chief executive of the broadcaster had already issued an apology, noting there had been "a major oversight in relation to accuracy".
Ofcom has ordered the corporation to broadcast a peak-time statement about its decisions.
"As this represents a significant violation of our code, we are instructing the corporation to broadcast a announcement of our findings against it on BBC Two at 9pm, with a schedule to be determined," the statement read.
'Possibility to Undermine Confidence'
The authority's report stated: "Our investigation found that the documentary's lack of disclosure that the voice's parent served in a post in the Hamas-administered government was significantly deceptive.
"It meant that the viewers did not have vital facts which may have been extremely pertinent to their evaluation of the voice and the content he provided.
"Trust is at the heart of the connection between a television network and its audience, notably for a state-funded media outlet such as the British Broadcasting Corporation.
"This failing had the potential to erode the exceptionally strong amounts of credibility that audiences would have placed in a documentary produced by the BBC about the Gaza conflict."
The documentary was pulled from the BBC's streaming service in the month of February after the narrator's family links came to light, and in this past July an corporation's own inquiry determined it violated the broadcaster's journalistic standards on truthfulness.
A BBC spokesperson stated: "The authority's determination is in accordance with the conclusions of the corporation's inquiry, that there was a significant failing in the film in relation to the corporation's content standards on factual correctness, which reflects Rule 2.2 of the authority's broadcasting regulations.
"We issued an apology for this and we agree with the authority's determination in complete. We will comply with the sanction as soon as the timing and language are finalised."
