The British broadcaster was found to have committed a "serious breach" of industry standards by omitting to mention that the presenter of a documentary about Gaza was the child of a Hamas official, as ruled by British broadcasting authority Ofcom.
An inquiry by the broadcasting watchdog into the documentary titled Gaza: How to Survive a Warzone has determined that the programme was "significantly deceptive".
The BBC's director general had previously apologised, noting there had been "a serious error in relation to accuracy".
Ofcom has ordered the broadcaster to transmit a prime-time announcement about its conclusions.
"Given this constitutes a serious breach of our code, we are directing the BBC to transmit a message of our findings against it on BBC Two at 9pm, with a schedule to be confirmed," the regulator stated.
'Risk to Damage Trust'
The watchdog's report stated: "Our investigation determined that the programme's failure to disclose that the narrator's male guardian held a role in the Hamas-controlled government was significantly deceptive.
"Consequently that the public did not have essential details which may have been highly relevant to their judgment of the presenter and the details he presented.
"Credibility is at the heart of the bond between a television network and its public, particularly for a national broadcasting corporation such as the public broadcaster.
"This failing had the risk to erode the significantly high amounts of confidence that the public would have placed in a factual film from the broadcaster about the Gaza conflict."
The film was pulled from the online platform in February after the presenter's personal associations were revealed, and in July an corporation's own inquiry concluded it violated the organization's editorial guidelines on accuracy.
A BBC spokesperson said: "The authority's determination is in agreement with the findings of the internal assessment, that there was a significant failing in the programme in relation to the corporation's content standards on factual correctness, which reflects regulation 2.2 of the authority's broadcasting regulations.
"We issued an apology for this and we accept the authority's determination in full. We will follow the sanction as soon as the schedule and wording are determined."
