The BBC was found to have committed a "serious breach" of media regulations by not revealing that the voice of a film about the Gaza conflict was the child of a Hamas official, according to UK media regulator Ofcom.
An inquiry by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has found that the documentary was "substantially inaccurate".
The BBC's director general had previously apologised, stating there had been "a major oversight in relation to truthfulness".
The authority has instructed the BBC to air a evening declaration about its decisions.
"As this represents a major infringement of our regulations, we are ordering the corporation to transmit a statement of our determinations against it on BBC2 at nine o'clock in the evening, with a schedule to be determined," the regulator stated.
'Risk to Erode Confidence'
The regulator's statement stated: "The inquiry we conducted concluded that the programme's failure to disclose that the presenter's father occupied a position in the Hamas-controlled government was materially misleading.
"This implied that the audience did not have vital facts which may have been highly relevant to their evaluation of the presenter and the information he shared.
"Credibility is at the heart of the bond between a media organization and its viewers, especially for a public service broadcaster such as the British Broadcasting Corporation.
"This error had the potential to undermine the very considerable amounts of credibility that viewers would have put in a BBC factual programme about the Gaza conflict."
The film was removed from iPlayer in the month of February after the narrator's familial connections came to light, and in the month of July an corporation's own inquiry concluded it infringed the corporation's editorial guidelines on truthfulness.
A corporation official said: "The Ofcom ruling is in accordance with the conclusions of the internal assessment, that there was a significant failing in the film in relation to the broadcaster's journalistic policies on truthfulness, which aligns with clause 2.2 of the regulator's media standards.
"We expressed regret for this and we comply with Ofcom's decision in its entirety. We will comply with the penalty as soon as the schedule and wording are finalised."
