The public service broadcaster was found to have committed a "major breach" of media regulations by failing to disclose that the narrator of a documentary about Gaza was the child of a Hamas representative, as ruled by British broadcasting authority Ofcom.
An inquiry by the media regulator into the documentary titled Gaza: How to Survive a Warzone has found that the programme was "materially misleading".
The head of the BBC had previously apologised, stating there had been "a serious error in relation to truthfulness".
The regulator has directed the BBC to broadcast a peak-time statement about its findings.
"Since this amounts to a significant violation of our regulations, we are instructing the broadcaster to broadcast a announcement of our determinations against it on the BBC's second channel at 21:00, with a schedule to be determined," the statement read.
'Risk to Erode Confidence'
The authority's statement said: "Our probe determined that the film's omission to reveal that the presenter's parent held a post in the Hamas-controlled administration was materially misleading.
"Consequently that the viewers did not have critical information which may have been extremely pertinent to their assessment of the presenter and the details he shared.
"Confidence is at the center of the bond between a television network and its audience, particularly for a state-funded media outlet such as the BBC.
"This error had the possibility to undermine the significantly high degrees of credibility that the public would have placed in a BBC factual programme about the Israel-Gaza war."
The programme was pulled from iPlayer in the month of February after the narrator's personal associations emerged, and in July an broadcaster's internal assessment found it violated the organization's editorial guidelines on accuracy.
A corporation official commented: "The Ofcom ruling is in line with the conclusions of the corporation's inquiry, that there was a significant failing in the programme in relation to the BBC's Editorial Guidelines on truthfulness, which aligns with clause 2.2 of Ofcom's Broadcasting Code.
"We issued an apology for this and we accept Ofcom's decision in complete. We will comply with the penalty as soon as the schedule and wording are confirmed."
