The British broadcaster was found to have committed a "major breach" of media regulations by not revealing that the voice of a documentary about the Gaza conflict was the child of a Hamas representative, as determined by British broadcasting authority Ofcom.
An inquiry by the media regulator into the programme Gaza: How to Survive a Warzone has determined that the programme was "substantially inaccurate".
The chief executive of the broadcaster had previously apologised, saying there had been "a significant failing in relation to factual correctness".
The regulator has instructed the BBC to transmit a evening declaration about its decisions.
"Given this constitutes a major infringement of our rules, we are directing the broadcaster to transmit a announcement of our findings against it on BBC Two at 21:00, with a date to be finalised," the regulator stated.
'Risk to Erode Trust'
The watchdog's statement said: "Our probe concluded that the programme's failure to disclose that the narrator's male guardian occupied a post in the Hamas-administered administration was substantially inaccurate.
"Consequently that the public did not have vital facts which may have been very significant to their evaluation of the narrator and the information he shared.
"Confidence is at the center of the bond between a television network and its viewers, particularly for a state-funded media outlet such as the BBC.
"This oversight had the risk to damage the significantly high levels of confidence that viewers would have placed in a documentary produced by the BBC about the Israel-Gaza war."
The documentary was withdrawn from the online platform in the month of February after the narrator's family links were revealed, and in the month of July an corporation's own inquiry concluded it infringed the corporation's editorial guidelines on truthfulness.
A representative for the broadcaster said: "The authority's determination is in agreement with the conclusions of the corporation's inquiry, that there was a major oversight in the documentary in relation to the corporation's content standards on truthfulness, which corresponds to clause 2.2 of Ofcom's Broadcasting Code.
"We expressed regret for this and we accept Ofcom's decision in full. We will comply with the penalty as soon as the date and language are finalised."
