The public service broadcaster was found to have committed a "serious breach" of industry standards by not revealing that the narrator of a programme about Gaza was the son of a Hamas official, according to British broadcasting authority Ofcom.
An inquiry by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has concluded that the programme was "materially misleading".
The head of the BBC had previously apologised, stating there had been "a significant failing in relation to factual correctness".
The regulator has directed the broadcaster to air a peak-time declaration about its decisions.
"Given this constitutes a major infringement of our rules, we are instructing the broadcaster to broadcast a statement of our determinations against it on the BBC's second channel at nine o'clock in the evening, with a date to be finalised," it said.
'Possibility to Undermine Confidence'
The watchdog's report stated: "The inquiry we conducted determined that the film's lack of disclosure that the voice's father occupied a post in the Hamas-administered government was significantly deceptive.
"This implied that the viewers did not have critical information which may have been very significant to their evaluation of the presenter and the content he presented.
"Credibility is at the heart of the bond between a broadcaster and its viewers, especially for a public service broadcaster such as the British Broadcasting Corporation.
"This failing had the risk to damage the significantly high amounts of confidence that the public would have invested in a factual film from the broadcaster about the Israel-Gaza war."
The film was withdrawn from iPlayer in the month of February after the presenter's familial connections emerged, and in July an broadcaster's internal assessment concluded it violated the organization's content policies on accuracy.
A BBC spokesperson stated: "The authority's determination is in line with the findings of the internal assessment, that there was a major oversight in the documentary in relation to the corporation's content standards on truthfulness, which aligns with Rule 2.2 of the regulator's media standards.
"We issued an apology for this and we comply with Ofcom's decision in full. We will follow the penalty as soon as the schedule and wording are determined."
