The British broadcaster committed a "major breach" of media regulations by omitting to mention that the narrator of a documentary about the Gaza conflict was the son of a Hamas administrator, as ruled by regulatory body Ofcom.
An inquiry by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has found that the documentary was "materially misleading".
The BBC's director general had previously apologised, saying there had been "a serious error in relation to truthfulness".
The regulator has ordered the broadcaster to transmit a peak-time statement about its conclusions.
"Given this constitutes a significant violation of our rules, we are instructing the BBC to broadcast a statement of our determinations against it on BBC Two at nine o'clock in the evening, with a timing to be finalised," the statement read.
'Risk to Erode Confidence'
The regulator's announcement said: "Our investigation found that the documentary's lack of disclosure that the voice's parent held a position in the Hamas-controlled government was materially misleading.
"Consequently that the audience did not have essential details which may have been highly relevant to their assessment of the presenter and the content he presented.
"Confidence is at the heart of the bond between a television network and its audience, especially for a state-funded media outlet such as the public broadcaster.
"This error had the possibility to undermine the very considerable degrees of trust that audiences would have placed in a factual film from the broadcaster about the Gaza conflict."
The documentary was removed from the online platform in February after the boy's personal associations emerged, and in July an corporation's own inquiry determined it violated the corporation's journalistic standards on factual correctness.
A representative for the broadcaster stated: "The regulator's decision is in accordance with the findings of Peter Johnston's review, that there was a significant failing in the programme in relation to the corporation's content standards on accuracy, which corresponds to Rule 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we accept Ofcom's decision in full. We will adhere to the directive as soon as the date and language are finalised."
