The public service broadcaster committed a "serious breach" of industry standards by not revealing that the voice of a documentary about the Gaza conflict was the child of a Hamas representative, as determined by British broadcasting authority Ofcom.
An investigation by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has determined that the documentary was "substantially inaccurate".
The chief executive of the broadcaster had already issued an apology, saying there had been "a significant failing in relation to accuracy".
The regulator has instructed the BBC to air a prime-time announcement about its conclusions.
"Given this constitutes a serious breach of our rules, we are directing the broadcaster to broadcast a statement of our conclusions against it on BBC2 at 21:00, with a date to be determined," the statement read.
'Risk to Damage Trust'
The regulator's report declared: "Our probe found that the documentary's omission to reveal that the narrator's father occupied a post in the Hamas-run administration was substantially inaccurate.
"It meant that the public did not have vital facts which may have been extremely pertinent to their judgment of the voice and the content he presented.
"Confidence is at the center of the bond between a television network and its viewers, particularly for a state-funded media outlet such as the British Broadcasting Corporation.
"This error had the risk to undermine the very considerable degrees of confidence that the public would have placed in a factual film from the broadcaster about the conflict in Gaza."
The film was pulled from the online platform in the month of February after the narrator's familial connections emerged, and in July an corporation's own inquiry determined it breached the organization's journalistic standards on factual correctness.
A representative for the broadcaster said: "The regulator's decision is in accordance with the results of the internal assessment, that there was a significant failing in the programme in relation to the BBC's Editorial Guidelines on factual correctness, which aligns with Rule 2.2 of the authority's broadcasting regulations.
"We expressed regret for this and we comply with the regulator's ruling in complete. We will follow the sanction as soon as the timing and wording are determined."
