The public service broadcaster was found to have committed a "major breach" of broadcasting rules by omitting to mention that the presenter of a programme about Gaza was the son of a Hamas official, as determined by UK media regulator Ofcom.
An inquiry by Ofcom into the programme Gaza: How to Survive a Warzone has determined that the film was "materially misleading".
The chief executive of the broadcaster had earlier expressed regret, stating there had been "a serious error in relation to truthfulness".
The regulator has directed the corporation to air a peak-time statement about its conclusions.
"As this represents a serious breach of our rules, we are directing the BBC to transmit a message of our determinations against it on BBC Two at 9pm, with a schedule to be confirmed," the statement read.
'Possibility to Erode Confidence'
The authority's report declared: "Our investigation found that the programme's omission to reveal that the narrator's parent occupied a post in the Hamas-administered authority was significantly deceptive.
"This implied that the audience did not have critical information which may have been extremely pertinent to their judgment of the voice and the details he presented.
"Credibility is at the core of the relationship between a broadcaster and its public, particularly for a state-funded media outlet such as the BBC.
"This error had the risk to damage the significantly high degrees of credibility that viewers would have invested in a BBC factual programme about the Israel-Gaza war."
The programme was withdrawn from the online platform in February after the presenter's family links came to light, and in July an corporation's own inquiry determined it infringed the organization's editorial guidelines on accuracy.
A corporation official commented: "The Ofcom ruling is in line with the findings of the corporation's inquiry, that there was a serious error in the programme in relation to the broadcaster's journalistic policies on truthfulness, which corresponds to regulation 2.2 of the regulator's media standards.
"We issued an apology for this and we agree with the regulator's ruling in full. We will follow the sanction as soon as the timing and language are finalised."
