The public service broadcaster was found to have committed a "serious breach" of broadcasting rules by omitting to mention that the presenter of a film about the Gaza conflict was the son of a Hamas representative, as ruled by British broadcasting authority Ofcom.
An inquiry by Ofcom into the documentary titled Gaza: How to Survive a Warzone has concluded that the programme was "significantly deceptive".
The chief executive of the broadcaster had previously apologised, stating there had been "a significant failing in relation to accuracy".
The regulator has instructed the corporation to transmit a evening statement about its decisions.
"As this represents a significant violation of our code, we are directing the BBC to transmit a message of our determinations against it on the BBC's second channel at 9pm, with a date to be determined," it said.
'Possibility to Damage Confidence'
The watchdog's announcement stated: "Our probe found that the film's omission to reveal that the voice's parent occupied a position in the Hamas-run administration was substantially inaccurate.
"This implied that the viewers did not have critical information which may have been highly relevant to their assessment of the presenter and the details he shared.
"Confidence is at the core of the bond between a television network and its viewers, especially for a national broadcasting corporation such as the British Broadcasting Corporation.
"This oversight had the possibility to damage the exceptionally strong amounts of credibility that viewers would have placed in a BBC factual programme about the Israel-Gaza war."
The programme was withdrawn from the online platform in last February after the narrator's family links emerged, and in the month of July an corporation's own inquiry concluded it infringed the broadcaster's content policies on accuracy.
A representative for the broadcaster commented: "The authority's determination is in agreement with the results of Peter Johnston's review, that there was a serious error in the documentary in relation to the broadcaster's journalistic policies on truthfulness, which aligns with regulation 2.2 of the regulator's media standards.
"We issued an apology for this and we comply with Ofcom's decision in its entirety. We will follow the sanction as soon as the schedule and language are finalised."
