The BBC was found to have committed a "significant breach" of industry standards by omitting to mention that the narrator of a film about the Gaza situation was the son of a Hamas administrator, as ruled 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 "significantly deceptive".
The head of the BBC had previously apologised, saying there had been "a significant failing in relation to factual correctness".
Ofcom has ordered the corporation to broadcast a peak-time statement about its findings.
"As this represents a significant violation of our rules, we are instructing the BBC to broadcast a announcement of our conclusions against it on the BBC's second channel at 21:00, with a schedule to be finalised," the regulator stated.
'Possibility to Damage Confidence'
The authority's statement stated: "The inquiry we conducted found that the programme's lack of disclosure that the voice's father occupied a post in the Hamas-controlled authority was significantly deceptive.
"It meant that the audience did not have essential details which may have been very significant to their evaluation of the presenter and the details he presented.
"Confidence is at the heart of the bond between a television network and its viewers, particularly for a national broadcasting corporation such as the British Broadcasting Corporation.
"This failing had the potential to damage the exceptionally strong levels of confidence that viewers would have put in a documentary produced by the BBC about the conflict in Gaza."
The documentary was pulled from iPlayer in the month of February after the presenter's familial connections emerged, and in this past July an corporation's own inquiry determined it violated the broadcaster's journalistic standards on accuracy.
A representative for the broadcaster commented: "The Ofcom ruling is in line with the conclusions of the corporation's inquiry, that there was a serious error in the film in relation to the broadcaster's journalistic policies on factual correctness, which aligns with Rule 2.2 of the regulator's media standards.
"We expressed regret for this and we comply with the regulator's ruling in complete. We will comply with the penalty as soon as the date and wording are confirmed."
