The public service broadcaster was found to have committed a "major breach" of media regulations by not revealing that the presenter of a film about the Gaza conflict was the son of a Hamas administrator, according to regulatory body Ofcom.
An investigation by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has determined that the programme was "substantially inaccurate".
The BBC's director general had previously apologised, stating there had been "a serious error in relation to factual correctness".
Ofcom has instructed the BBC to transmit a evening statement about its findings.
"Since this amounts to a serious breach of our rules, we are instructing the broadcaster to transmit a statement of our determinations against it on BBC Two at nine o'clock in the evening, with a timing to be confirmed," it said.
'Possibility to Damage Confidence'
The authority's announcement declared: "Our probe determined that the documentary's lack of disclosure that the presenter's father served in a role in the Hamas-run government was significantly deceptive.
"It meant that the public did not have vital facts which may have been extremely pertinent to their assessment of the presenter and the details he provided.
"Confidence is at the heart of the connection between a broadcaster and its audience, particularly for a public service broadcaster such as the British Broadcasting Corporation.
"This failing had the risk to damage the significantly high amounts of trust that audiences would have invested in a BBC factual programme about the Gaza conflict."
The film was withdrawn from the online platform in the month of February after the boy's personal associations emerged, and in July an corporation's own inquiry found it breached the organization's content policies on truthfulness.
A corporation official said: "The authority's determination is in agreement with the conclusions of Peter Johnston's review, that there was a serious error in the film in relation to the corporation's content standards on accuracy, which corresponds to clause 2.2 of Ofcom's Broadcasting Code.
"We expressed regret for this and we comply with the regulator's ruling in full. We will follow the penalty as soon as the date and wording are confirmed."
