The British broadcaster committed a "significant breach" of media regulations by omitting to mention that the voice of a documentary about Gaza was the offspring of a Hamas representative, as ruled by UK media regulator Ofcom.
An probe by Ofcom into the programme Gaza: How to Survive a Warzone has found that the programme was "substantially inaccurate".
The BBC's director general had previously apologised, noting there had been "a major oversight in relation to truthfulness".
The regulator has instructed the corporation to transmit a prime-time statement about its findings.
"Given this constitutes a major infringement of our rules, we are ordering the BBC to air a statement of our conclusions against it on BBC Two at 21:00, with a date to be determined," the regulator stated.
'Risk to Undermine Trust'
The watchdog's statement declared: "The inquiry we conducted found that the programme's failure to disclose that the presenter's male guardian held a role in the Hamas-run administration was significantly deceptive.
"This implied that the viewers did not have essential details which may have been extremely pertinent to their evaluation of the presenter and the details he shared.
"Trust is at the core of the bond between a media organization and its public, particularly for a state-funded media outlet such as the British Broadcasting Corporation.
"This oversight had the possibility to undermine the significantly high amounts of confidence that the public would have placed in a BBC factual programme about the Israel-Gaza war."
The film was pulled from the online platform in last February after the narrator's familial connections emerged, and in July an corporation's own inquiry determined it violated the organization's content policies on truthfulness.
A BBC spokesperson said: "The regulator's decision is in agreement with the results of Peter Johnston's review, that there was a significant failing in the film 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 Ofcom's decision in complete. We will comply with the sanction as soon as the schedule and wording are finalised."
