The public service broadcaster was found to have committed a "major breach" of industry standards by failing to disclose that the narrator of a documentary about the Gaza conflict was the son of a Hamas administrator, as ruled by regulatory body Ofcom.
An investigation by the broadcasting watchdog into Gaza: How to Survive a Warzone has determined that the programme was "materially misleading".
The chief executive of the broadcaster had previously apologised, saying there had been "a serious error in relation to accuracy".
The authority has directed the BBC to broadcast a evening announcement about its decisions.
"Given this constitutes a major infringement of our code, we are ordering the corporation to transmit a statement of our findings against it on the BBC's second channel at nine o'clock in the evening, with a timing to be determined," the regulator stated.
'Possibility to Damage Trust'
The watchdog's statement declared: "Our probe found that the documentary's failure to disclose that the presenter's father served in a post in the Hamas-controlled government was materially misleading.
"This implied that the public did not have critical information which may have been highly relevant to their judgment of the presenter and the information he presented.
"Credibility is at the heart of the bond between a television network and its viewers, particularly for a national broadcasting corporation such as the BBC.
"This oversight had the risk to damage the exceptionally strong levels of confidence that audiences would have put in a factual film from the broadcaster about the Israel-Gaza war."
The documentary was withdrawn from the online platform in the month of February after the presenter's personal associations were revealed, and in July an corporation's own inquiry found it violated the corporation's journalistic standards on truthfulness.
A corporation official stated: "The regulator's decision is in accordance with the findings of the corporation's inquiry, that there was a serious error in the film in relation to the broadcaster's journalistic policies on truthfulness, which reflects regulation 2.2 of the authority's broadcasting regulations.
"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 timing and wording are determined."
